<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019d44b3-bcd0-7a33-b164-024e4460a0bb,g:5fe9982e-6408-4a34-8d11-07561a89d236-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:fcb="http://www.sunflowerbank.com/20260331" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.sunflowerbank.com/20260331">
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fcb-20260331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fcb-20260331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fcb-20260331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fcb-20260331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://www.sunflowerbank.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.sunflowerbank.com/role/ConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParentheticals" roleURI="http://www.sunflowerbank.com/role/ConsolidatedBalanceSheetsParentheticals">
        <link:definition>9952152 - Statement - Consolidated Balance Sheets (Parentheticals)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofIncomeandComprehensiveIncome" roleURI="http://www.sunflowerbank.com/role/ConsolidatedStatementsofIncomeandComprehensiveIncome">
        <link:definition>9952153 - Statement - Consolidated Statements of Income and Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofStockholdersEquity" roleURI="http://www.sunflowerbank.com/role/ConsolidatedStatementsofStockholdersEquity">
        <link:definition>9952154 - Statement - Consolidated Statements of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.sunflowerbank.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>9952155 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationandBasisofPresentation" roleURI="http://www.sunflowerbank.com/role/OrganizationandBasisofPresentation">
        <link:definition>9952156 - Disclosure - Organization and Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionofFirstFoundationInc" roleURI="http://www.sunflowerbank.com/role/AcquisitionofFirstFoundationInc">
        <link:definition>9952157 - Disclosure - Acquisition of First Foundation Inc.</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Securities" roleURI="http://www.sunflowerbank.com/role/Securities">
        <link:definition>9952158 - Disclosure - Securities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Loans" roleURI="http://www.sunflowerbank.com/role/Loans">
        <link:definition>9952159 - Disclosure - Loans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRights" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRights">
        <link:definition>9952160 - Disclosure - Mortgage Servicing Rights</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstruments" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstruments">
        <link:definition>9952161 - Disclosure - Derivative Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Deposits" roleURI="http://www.sunflowerbank.com/role/Deposits">
        <link:definition>9952162 - Disclosure - Deposits</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.sunflowerbank.com/role/Debt">
        <link:definition>9952163 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.sunflowerbank.com/role/EarningsPerShare">
        <link:definition>9952164 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.sunflowerbank.com/role/StockholdersEquity">
        <link:definition>9952165 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.sunflowerbank.com/role/IncomeTaxes">
        <link:definition>9952166 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryCapitalMatters" roleURI="http://www.sunflowerbank.com/role/RegulatoryCapitalMatters">
        <link:definition>9952167 - Disclosure - Regulatory Capital Matters</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurements">
        <link:definition>9952168 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.sunflowerbank.com/role/SegmentInformation">
        <link:definition>9952169 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.sunflowerbank.com/role/CommitmentsandContingencies">
        <link:definition>9952170 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitments" roleURI="http://www.sunflowerbank.com/role/LeaseCommitments">
        <link:definition>9952171 - Disclosure - Lease Commitments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://www.sunflowerbank.com/role/SubsequentEvents">
        <link:definition>9952172 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationandBasisofPresentationPolicies" roleURI="http://www.sunflowerbank.com/role/OrganizationandBasisofPresentationPolicies">
        <link:definition>9955511 - Disclosure - Organization and Basis of Presentation (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SecuritiesTables" roleURI="http://www.sunflowerbank.com/role/SecuritiesTables">
        <link:definition>9955512 - Disclosure - Securities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansTables" roleURI="http://www.sunflowerbank.com/role/LoansTables">
        <link:definition>9955513 - Disclosure - Loans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRightsTables" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRightsTables">
        <link:definition>9955514 - Disclosure - Mortgage Servicing Rights (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsTables" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstrumentsTables">
        <link:definition>9955515 - Disclosure - Derivative Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DepositsTables" roleURI="http://www.sunflowerbank.com/role/DepositsTables">
        <link:definition>9955516 - Disclosure - Deposits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.sunflowerbank.com/role/DebtTables">
        <link:definition>9955517 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.sunflowerbank.com/role/EarningsPerShareTables">
        <link:definition>9955518 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityTables">
        <link:definition>9955519 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.sunflowerbank.com/role/IncomeTaxesTables">
        <link:definition>9955520 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryCapitalMattersTables" roleURI="http://www.sunflowerbank.com/role/RegulatoryCapitalMattersTables">
        <link:definition>9955521 - Disclosure - Regulatory Capital Matters (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurementsTables">
        <link:definition>9955522 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.sunflowerbank.com/role/SegmentInformationTables">
        <link:definition>9955523 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsTables" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsTables">
        <link:definition>9955524 - Disclosure - Lease Commitments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionofFirstFoundationIncDetails" roleURI="http://www.sunflowerbank.com/role/AcquisitionofFirstFoundationIncDetails">
        <link:definition>9955525 - Disclosure - Acquisition of First Foundation Inc. (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SecuritiesScheduleofSecuritiesbyTypeDetails" roleURI="http://www.sunflowerbank.com/role/SecuritiesScheduleofSecuritiesbyTypeDetails">
        <link:definition>9955526 - Disclosure - Securities - Schedule of Securities by Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SecuritiesNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/SecuritiesNarrativeDetails">
        <link:definition>9955527 - Disclosure - Securities - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SecuritiesScheduleofFairValueandUnrealizedLossesonDebtSecuritiesinContinuousUnrealizedLossPositionDetails" roleURI="http://www.sunflowerbank.com/role/SecuritiesScheduleofFairValueandUnrealizedLossesonDebtSecuritiesinContinuousUnrealizedLossPositionDetails">
        <link:definition>9955528 - Disclosure - Securities - Schedule of Fair Value and Unrealized Losses on Debt Securities in Continuous Unrealized Loss Position (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SecuritiesScheduleofAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetails" roleURI="http://www.sunflowerbank.com/role/SecuritiesScheduleofAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetails">
        <link:definition>9955529 - Disclosure - Securities - Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofLoansHeldforInvestmentDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofLoansHeldforInvestmentDetails">
        <link:definition>9955530 - Disclosure - Loans - Schedule of Loans Held for Investment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/LoansNarrativeDetails">
        <link:definition>9955531 - Disclosure - Loans - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofAllowanceforCreditLossesbyPortfolioTypeDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofAllowanceforCreditLossesbyPortfolioTypeDetails">
        <link:definition>9955532 - Disclosure - Loans - Schedule of Allowance for Credit Losses by Portfolio Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofAgingofLoanPortfolioDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofAgingofLoanPortfolioDetails">
        <link:definition>9955533 - Disclosure - Loans - Schedule of Aging of Loan Portfolio (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofAmortizedCostsbySegmentofLoansbyRiskCategoryandOriginationDateDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofAmortizedCostsbySegmentofLoansbyRiskCategoryandOriginationDateDetails">
        <link:definition>9955534 - Disclosure - Loans - Schedule of Amortized Costs by Segment of Loans by Risk Category and Origination Date (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofCollateralDependentLoansIndividuallyEvaluatedforAllowanceforCreditLossDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofCollateralDependentLoansIndividuallyEvaluatedforAllowanceforCreditLossDetails">
        <link:definition>9955535 - Disclosure - Loans - Schedule of Collateral Dependent Loans, Individually Evaluated for Allowance for Credit Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofLoanModificationsDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofLoanModificationsDetails">
        <link:definition>9955536 - Disclosure - Loans - Schedule of Loan Modifications (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LoansScheduleofPerformanceLoanModificationsDetails" roleURI="http://www.sunflowerbank.com/role/LoansScheduleofPerformanceLoanModificationsDetails">
        <link:definition>9955537 - Disclosure - Loans - Schedule of Performance Loan Modifications (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRightsScheduleofUnpaidPrincipalLoanBalanceofServicingPortfolioDetails" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRightsScheduleofUnpaidPrincipalLoanBalanceofServicingPortfolioDetails">
        <link:definition>9955538 - Disclosure - Mortgage Servicing Rights - Schedule of Unpaid Principal Loan Balance of Servicing Portfolio (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRightsScheduleofMortgageServicingRightsatFairValueDetails" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRightsScheduleofMortgageServicingRightsatFairValueDetails">
        <link:definition>9955539 - Disclosure - Mortgage Servicing Rights - Schedule of Mortgage Servicing Rights at Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRightsScheduleofWeightedAverageKeyAssumptionstoEstimateFairValueofMortgageServicingRightsDetails" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRightsScheduleofWeightedAverageKeyAssumptionstoEstimateFairValueofMortgageServicingRightsDetails">
        <link:definition>9955540 - Disclosure - Mortgage Servicing Rights - Schedule of Weighted-Average Key Assumptions to Estimate Fair Value of Mortgage Servicing Rights (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MortgageServicingRightsScheduleofServicingandAncillaryFeesfromMortgageServicingPortfolioDetails" roleURI="http://www.sunflowerbank.com/role/MortgageServicingRightsScheduleofServicingandAncillaryFeesfromMortgageServicingPortfolioDetails">
        <link:definition>9955541 - Disclosure - Mortgage Servicing Rights - Schedule of Servicing and Ancillary Fees from Mortgage Servicing Portfolio (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsScheduleofTheComponentsOfDerivativeFinancialInstrumentsDetails" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstrumentsScheduleofTheComponentsOfDerivativeFinancialInstrumentsDetails">
        <link:definition>9955542 - Disclosure - Derivative Financial Instruments - Schedule of The Components Of Derivative Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsScheduleofGainsAndLossesOnBankingDerivativesAssetsandLiabilitiesDetails" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstrumentsScheduleofGainsAndLossesOnBankingDerivativesAssetsandLiabilitiesDetails">
        <link:definition>9955543 - Disclosure - Derivative Financial Instruments - Schedule of Gains And Losses On Banking Derivatives Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstrumentsNarrativeDetails">
        <link:definition>9955544 - Disclosure - Derivative Financial Instruments - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsScheduleofComponentsofOurMortgageBankingDerivativeFinancialInstrumentsDetails" roleURI="http://www.sunflowerbank.com/role/DerivativeFinancialInstrumentsScheduleofComponentsofOurMortgageBankingDerivativeFinancialInstrumentsDetails">
        <link:definition>9955545 - Disclosure - Derivative Financial Instruments- Schedule of Components of Our Mortgage Banking Derivative Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DepositsScheduleofCompositionofDepositsDetails" roleURI="http://www.sunflowerbank.com/role/DepositsScheduleofCompositionofDepositsDetails">
        <link:definition>9955546 - Disclosure - Deposits - Schedule of Composition of Deposits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DepositsScheduleofInterestExpenseIncurredonDepositsDetails" roleURI="http://www.sunflowerbank.com/role/DepositsScheduleofInterestExpenseIncurredonDepositsDetails">
        <link:definition>9955547 - Disclosure - Deposits - Schedule of Interest Expense Incurred on Deposits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DepositsScheduleofRemainingMaturityonCertificateofDepositAccountsDetails" roleURI="http://www.sunflowerbank.com/role/DepositsScheduleofRemainingMaturityonCertificateofDepositAccountsDetails">
        <link:definition>9955548 - Disclosure - Deposits - Schedule of Remaining Maturity on Certificate of Deposit Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofFHLBAdvancesandOtherBorrowingsOutstandingDetails" roleURI="http://www.sunflowerbank.com/role/DebtScheduleofFHLBAdvancesandOtherBorrowingsOutstandingDetails">
        <link:definition>9955549 - Disclosure - Debt - Schedule of FHLB Advances and Other Borrowings Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/DebtNarrativeDetails">
        <link:definition>9955550 - Disclosure - Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareScheduleofComputationofBasicandDilutedEarningsPerShareofCommonStockDetails" roleURI="http://www.sunflowerbank.com/role/EarningsPerShareScheduleofComputationofBasicandDilutedEarningsPerShareofCommonStockDetails">
        <link:definition>9955551 - Disclosure - Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share of Common Stock (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/EarningsPerShareNarrativeDetails">
        <link:definition>9955552 - Disclosure - Earnings Per Share - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityNarrativeDetails">
        <link:definition>9955553 - Disclosure - Stockholders' Equity - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityScheduleofDividendsPayableDetails" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityScheduleofDividendsPayableDetails">
        <link:definition>9955554 - Disclosure - Stockholders' Equity - Schedule of Dividends Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityScheduleofStockOptionActivityDetails" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityScheduleofStockOptionActivityDetails">
        <link:definition>9955555 - Disclosure - Stockholders' Equity - Schedule of Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityScheduleofNonvestedRestrictedStockUnitsRollForwardDetails" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityScheduleofNonvestedRestrictedStockUnitsRollForwardDetails">
        <link:definition>9955556 - Disclosure - Stockholders' Equity - Schedule of Non-vested Restricted Stock Units Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityShareBasedPaymentArrangementPerformanceSharesActivityDetails" roleURI="http://www.sunflowerbank.com/role/StockholdersEquityShareBasedPaymentArrangementPerformanceSharesActivityDetails">
        <link:definition>9955557 - Disclosure - Stockholders' Equity - Share-Based Payment Arrangement, Performance Shares, Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.sunflowerbank.com/role/IncomeTaxesDetails">
        <link:definition>9955558 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RegulatoryCapitalMattersScheduleofActualandrequiredcapitalamountsDetails" roleURI="http://www.sunflowerbank.com/role/RegulatoryCapitalMattersScheduleofActualandrequiredcapitalamountsDetails">
        <link:definition>9955559 - Disclosure - Regulatory Capital Matters - Schedule of Actual and required capital amounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurementsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails">
        <link:definition>9955560 - Disclosure - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofReconciliationforLevel3AssetsMeasuredatFairValueonaRecurringBasisDetails" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurementsScheduleofReconciliationforLevel3AssetsMeasuredatFairValueonaRecurringBasisDetails">
        <link:definition>9955561 - Disclosure - Fair Value Measurements - Schedule of Reconciliation for Level 3 Assets Measured at Fair Value on a Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofAssetsandLiabilitiesMeasuredatFairValueonaNonrecurringDetails" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurementsScheduleofAssetsandLiabilitiesMeasuredatFairValueonaNonrecurringDetails">
        <link:definition>9955562 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Non-recurring (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofEstimatedFairValuesofFinancialInstrumentsNotCarriedatFairValueDetails" roleURI="http://www.sunflowerbank.com/role/FairValueMeasurementsScheduleofEstimatedFairValuesofFinancialInstrumentsNotCarriedatFairValueDetails">
        <link:definition>9955563 - Disclosure - Fair Value Measurements - Schedule of Estimated Fair Values of Financial Instruments Not Carried at Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/SegmentInformationNarrativeDetails">
        <link:definition>9955564 - Disclosure - Segment Information - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleofSegmentReportingInformationDetails" roleURI="http://www.sunflowerbank.com/role/SegmentInformationScheduleofSegmentReportingInformationDetails">
        <link:definition>9955565 - Disclosure - Segment Information - Schedule of Segment Reporting Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesDetails" roleURI="http://www.sunflowerbank.com/role/CommitmentsandContingenciesDetails">
        <link:definition>9955566 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsNarrativeDetails" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsNarrativeDetails">
        <link:definition>9955567 - Disclosure - Lease Commitments - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsScheduleofLeasesExistingDuringTransitionfromASC840toASC842Details" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsScheduleofLeasesExistingDuringTransitionfromASC840toASC842Details">
        <link:definition>9955568 - Disclosure - Lease Commitments - Schedule of Leases Existing During Transition from ASC 840 to ASC 842 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsScheduleofFutureUndiscountedLeasePaymentsDueUnderNonCancelableOperatingLeasesDetails" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsScheduleofFutureUndiscountedLeasePaymentsDueUnderNonCancelableOperatingLeasesDetails">
        <link:definition>9955569 - Disclosure - Lease Commitments - Schedule of Future Undiscounted Lease Payments Due Under Non-Cancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsScheduleofFutureUndiscountedLeasePaymentsDueUnderNonCancelableOperatingLeasesDetails_1" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsScheduleofFutureUndiscountedLeasePaymentsDueUnderNonCancelableOperatingLeasesDetails_1">
        <link:definition>9955569 - Disclosure - Lease Commitments - Schedule of Future Undiscounted Lease Payments Due Under Non-Cancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeaseCommitmentsScheduleofComponentsofTotalLeaseExpenseDetails" roleURI="http://www.sunflowerbank.com/role/LeaseCommitmentsScheduleofComponentsofTotalLeaseExpenseDetails">
        <link:definition>9955570 - Disclosure - Lease Commitments - Schedule of Components of Total Lease Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="fcb_VotingCommonStockMember" abstract="true" name="VotingCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_InterestAndFeeIncomeLoansAndLeasesTaxable" abstract="false" name="InterestAndFeeIncomeLoansAndLeasesTaxable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_InterestAndFeeIncomeLoansAndLeasesTaxExempt" abstract="false" name="InterestAndFeeIncomeLoansAndLeasesTaxExempt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_InterestAndDividendIncomeSecuritiesOperatingTaxable" abstract="false" name="InterestAndDividendIncomeSecuritiesOperatingTaxable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_InterestAndDividendIncomeSecuritiesOperatingTaxExempt" abstract="false" name="InterestAndDividendIncomeSecuritiesOperatingTaxExempt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NoninterestIncomeDepositAccountServiceFee" abstract="false" name="NoninterestIncomeDepositAccountServiceFee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_TreasuryManagementServiceFees" abstract="false" name="TreasuryManagementServiceFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_CreditAndDebitCardProcessingFees" abstract="false" name="CreditAndDebitCardProcessingFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AmortizationAndImpairmentOfIntangibleAssets" abstract="false" name="AmortizationAndImpairmentOfIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxesPaid" abstract="false" name="StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxesPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AmortizationAndAccretionOfDiscountOnAcquiredLoansNet" abstract="false" name="AmortizationAndAccretionOfDiscountOnAcquiredLoansNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AmortizationOfOtherIntangibleAssets" abstract="false" name="AmortizationOfOtherIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AmortizationOfFairValuePremiumOnAcquiredDeposits" abstract="false" name="AmortizationOfFairValuePremiumOnAcquiredDeposits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AccretionOfFairValueDiscountOnSubordinatedDebt" abstract="false" name="AccretionOfFairValueDiscountOnSubordinatedDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_ImpairmentOfOtherRealEstateOwnedAndForeclosedAssets" abstract="false" name="ImpairmentOfOtherRealEstateOwnedAndForeclosedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_FederalHomeLoanBankStockDividends" abstract="false" name="FederalHomeLoanBankStockDividends" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NetGainLossOnOtherRealEstateOwnedAndForeclosedAssets" abstract="false" name="NetGainLossOnOtherRealEstateOwnedAndForeclosedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_GainLossOnSalesOfLoansHeldForSaleNet" abstract="false" name="GainLossOnSalesOfLoansHeldForSaleNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_IncreaseDecreaseInLeaseRightOfUseAsset" abstract="false" name="IncreaseDecreaseInLeaseRightOfUseAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_LoanOriginationsNetOfRepayments" abstract="false" name="LoanOriginationsNetOfRepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NoncashInvestingAndFinancingActivitiesInterestPaidOnDeposits" abstract="false" name="NoncashInvestingAndFinancingActivitiesInterestPaidOnDeposits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NoncashInvestingAndFinancingActivitiesInterestPaidOnBorrowedFunds" abstract="false" name="NoncashInvestingAndFinancingActivitiesInterestPaidOnBorrowedFunds" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NetChangeInUnrealizedGainLossOnAvailableForSaleSecuritiesAndUnrealizedGainOnFairValueHedgesOfSecuritiesAvailableForSale" abstract="false" name="NetChangeInUnrealizedGainLossOnAvailableForSaleSecuritiesAndUnrealizedGainOnFairValueHedgesOfSecuritiesAvailableForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_MortgageServicingRightsResultingFromSaleOrSecuritizationOfMortgageLoans" abstract="false" name="MortgageServicingRightsResultingFromSaleOrSecuritizationOfMortgageLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" abstract="true" name="RegulatoryCapitalRequirementsUnderBankingRegulationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fcb_NatureOfOperationsPolicyTextBlock" abstract="false" name="NatureOfOperationsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="fcb_ScheduleOfUnpaidPrincipalLoanBalanceOfServicingPortfolioTableTextBlock" abstract="false" name="ScheduleOfUnpaidPrincipalLoanBalanceOfServicingPortfolioTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="fcb_ScheduleOfFairValueAssumptionsServicingAssetsTableTextBlock" abstract="false" name="ScheduleOfFairValueAssumptionsServicingAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="fcb_ScheduleOfServicingAndAncillaryFeesFromServicingAssetsTableTextBlock" abstract="false" name="ScheduleOfServicingAndAncillaryFeesFromServicingAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="fcb_FirstFoundationMember" abstract="true" name="FirstFoundationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_RestrictedStockAwardMember" abstract="true" name="RestrictedStockAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare" abstract="false" name="BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="fcb_DebtSecuritiesAllowanceForCreditLosses" abstract="false" name="DebtSecuritiesAllowanceForCreditLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_NonOwnerOccupiedLoansMember" abstract="true" name="NonOwnerOccupiedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_OwnerOccupiedLoansMember" abstract="true" name="OwnerOccupiedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_MultifamilyLoansMember" abstract="true" name="MultifamilyLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FinancingReceivableCreditLossExpenseReversalExcludingForUnfundedCommitments" abstract="false" name="FinancingReceivableCreditLossExpenseReversalExcludingForUnfundedCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_PassWatchMember" abstract="true" name="PassWatchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_SubstandardNonaccrualMember" abstract="true" name="SubstandardNonaccrualMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FinancingReceivableWithRelatedAllowanceAmortizedCost" abstract="false" name="FinancingReceivableWithRelatedAllowanceAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_FinancingReceivableWithRelatedAllowanceRelatedAllowance" abstract="false" name="FinancingReceivableWithRelatedAllowanceRelatedAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_FinancingReceivableWithNoRelatedAllowanceAmortizedCost" abstract="false" name="FinancingReceivableWithNoRelatedAllowanceAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_FinancialAssetNonaccrualMember" abstract="true" name="FinancialAssetNonaccrualMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FinancingReceivableUnpaidPrincipalBalanceOfServicingPortfolioTable" abstract="true" name="FinancingReceivableUnpaidPrincipalBalanceOfServicingPortfolioTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="fcb_FederalHomeLoanBankMember" abstract="true" name="FederalHomeLoanBankMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_OtherGovernmentAuthoritiesMember" abstract="true" name="OtherGovernmentAuthoritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FinancingReceivableUnpaidPrincipalBalanceOfServicingPortfolioLineItems" abstract="true" name="FinancingReceivableUnpaidPrincipalBalanceOfServicingPortfolioLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fcb_ServicingAssetsUnpaidPrincipalLoanBalance" abstract="false" name="ServicingAssetsUnpaidPrincipalLoanBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_ServicingAssetAtFairValueChangesInFairValueAbstract" abstract="true" name="ServicingAssetAtFairValueChangesInFairValueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fcb_ServicingAssetAtFairValueChangesInFairValueResultingFromPayOffsPayDownsAndRunoff" abstract="false" name="ServicingAssetAtFairValueChangesInFairValueResultingFromPayOffsPayDownsAndRunoff" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueCostOfServicingPerLoan" abstract="false" name="ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueCostOfServicingPerLoan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="fcb_LateAndAncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount" abstract="false" name="LateAndAncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_OtherDerivativeFinancialInstrumentsMember" abstract="true" name="OtherDerivativeFinancialInstrumentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_BankingDerivativeAssetsMember" abstract="true" name="BankingDerivativeAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_BankingDerivativeLiabilityMember" abstract="true" name="BankingDerivativeLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_MortgageBankingDerivativeAssetMember" abstract="true" name="MortgageBankingDerivativeAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_MortgageBankingDerivativeLiabilityMember" abstract="true" name="MortgageBankingDerivativeLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_ForwardMBSTradesMember" abstract="true" name="ForwardMBSTradesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_DemandDepositAccountsAndNegotiableOrderOfWithdrawalNOW" abstract="false" name="DemandDepositAccountsAndNegotiableOrderOfWithdrawalNOW" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_TimeDeposits100000Through250000" abstract="false" name="TimeDeposits100000Through250000" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_InterestExpenseDemandDepositAccountsAndNegotiableOrderOfWithdrawalNOWDepositsAccounts" abstract="false" name="InterestExpenseDemandDepositAccountsAndNegotiableOrderOfWithdrawalNOWDepositsAccounts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_TimeDepositMaturitiesAfterYearFour" abstract="false" name="TimeDepositMaturitiesAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_FederalHomeLoanBankAdvancesFixedRateMember" abstract="true" name="FederalHomeLoanBankAdvancesFixedRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_LondonInterbankOfferedRateMember" abstract="true" name="LondonInterbankOfferedRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_OtherFinancialInstitutionsMember" abstract="true" name="OtherFinancialInstitutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_SubordinatedNotesDueJanuary152032Member" abstract="true" name="SubordinatedNotesDueJanuary152032Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_SubordinatedDebtRelatedToTrustPreferredSecuritiesMember" abstract="true" name="SubordinatedDebtRelatedToTrustPreferredSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_NewMexicoBanquestCapitalTrustINMBCTIMember" abstract="true" name="NewMexicoBanquestCapitalTrustINMBCTIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_NewMexicoBanquestCapitalTrustIINMBCTIIMember" abstract="true" name="NewMexicoBanquestCapitalTrustIINMBCTIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_DebtInstrumentRedemptionPeriodFromIssuanceDate" abstract="false" name="DebtInstrumentRedemptionPeriodFromIssuanceDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="fcb_CommonStockHeldInAssets" abstract="false" name="CommonStockHeldInAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsPerShare" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfShareBasedPaymentArrangementsPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="fcb_FirstSunCapitalBancorp2017EquityIncentivePlanMember" abstract="true" name="FirstSunCapitalBancorp2017EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FirstSunCapitalBancorp2021EquityIncentivePlanMember" abstract="true" name="FirstSunCapitalBancorp2021EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_PioneersOptionPlansMember" abstract="true" name="PioneersOptionPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_FirstSunCapitalBancorp2017And2021EquityIncentivePlanMember" abstract="true" name="FirstSunCapitalBancorp2017And2021EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_ShareBasedCompensationAwardTrancheFourMember" abstract="true" name="ShareBasedCompensationAwardTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_DividendsTermWithoutPriorRegulatoryApprovalPrecedingPeriodOfNetIncome" abstract="false" name="DividendsTermWithoutPriorRegulatoryApprovalPrecedingPeriodOfNetIncome" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="fcb_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityNumberOfComparableCompanies" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityNumberOfComparableCompanies" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="fcb_April2025Member" abstract="true" name="April2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_April2024Member" abstract="true" name="April2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_April2023Member" abstract="true" name="April2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsExpectedToIssue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsExpectedToIssue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="fcb_StockIssuedDuringPeriodSharesProbableUnits" abstract="false" name="StockIssuedDuringPeriodSharesProbableUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="fcb_FinancingReceivableImpairedFairValueDisclosure" abstract="false" name="FinancingReceivableImpairedFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_OtherRealEstateOwnedAndForeclosedAssetsNetFairValueDisclosure" abstract="false" name="OtherRealEstateOwnedAndForeclosedAssetsNetFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_InterestReceivableFairValueDisclosure" abstract="false" name="InterestReceivableFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_AccruedInterestPayableFairValueDisclosure" abstract="false" name="AccruedInterestPayableFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_BankingSegmentMember" abstract="true" name="BankingSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_MortgageOperationsSegmentMember" abstract="true" name="MortgageOperationsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fcb_OtherNoninterestIncomeIncludingGainLossOnAvailableForSaleSecuritiesOtherRealEstateOwnedAndForeclosedAssetsActivityNet" abstract="false" name="OtherNoninterestIncomeIncludingGainLossOnAvailableForSaleSecuritiesOtherRealEstateOwnedAndForeclosedAssetsActivityNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_OtherNoninterestExpenseIncludingAmortizationOfIntangibleAssets" abstract="false" name="OtherNoninterestExpenseIncludingAmortizationOfIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_OtherInformationAbstract" abstract="true" name="OtherInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fcb_LoansAndLeasesReceivableCommitmentsFixedInterestRate" abstract="false" name="LoansAndLeasesReceivableCommitmentsFixedInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fcb_LoansAndLeasesReceivableCommitmentsFixedRatesMaturityPeriod" abstract="false" name="LoansAndLeasesReceivableCommitmentsFixedRatesMaturityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="fcb_OperatingLeaseRightOfUseAssetOnLeasedPropertyGross" abstract="false" name="OperatingLeaseRightOfUseAssetOnLeasedPropertyGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_OperatingLeaseRightOfUseAssetAccumulatedAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fcb_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
