Built-In Ribbon Tab Name Reference (1 Viewer)

For future reference...
Built-in ribbon tab names in Access

TabPrintPreviewAccess
TabHomeAccess
TabCreate
TabExternalData
TabDatabaseTools
TabSourceControl
TabAddIns
TabFormToolsFormatting
TabControlLayout
TabFormToolsDesign
TabFormToolsLayout
TabReportToolsFormatting
TabReportToolsLayout
TabReportToolsPageSetupLayout
TabReportToolsDesign
TabReportToolsAlignment
TabReportToolsPageSetupDesign
TabRelationshipToolsDesign
TabQueryToolsDesign
TabMacroToolsDesign
TabPivotTableDesign
TabPivotChartDesign
TabTableToolsDatasheet
TabTableToolsDesignAccess
TabAdpFunctionAndViewToolsDesign
TabAdpStoredProcedureToolsDesign
TabAdpSqlStatementDesign
TabAdpDiagramDesign

As listed here

So you can show your custom ribbon first using ...