Got it solved, had to go look at ALL of the idMso
values for both TabSets
& Tab
objects in the Ribbon.
So here is the XML for the CustomUI to allow for Show/Hide of some of the Default (at least the ones i needed) Tab/TabSet's. Using the same Show/Hide methods above.
<customUI onLoad="s_UIOnLoad" xmlns="http://schemas.microsoft.com/office/2006/01/customui">
<ribbon>
<!-- Excel File Menu options, not available through Tab or TabSets -->
<officeMenu>
<button idMso="FileNew" getVisible="OfficeGetVisible" />
<button idMso="FileOpen" getVisible="OfficeGetVisible" />
</officeMenu>
<!-- Excel TabSets that only become visible when certain objects
are selected (such as ListObjects, PivotTables, Charts, etc) -->
<contextualTabs>
<tabSet idMso="TabSetChartTools" getVisible="ContextualGetVisible"/>
<tabSet idMso="TabSetDrawingTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetEquationTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetHeaderAndFooterTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetInkTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetPictureTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetPivotChartTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetPivotTableTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetSlicerTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetSmartArtTools" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetSparkline" getVisible="ContextualGetVisible" />
<tabSet idMso="TabSetTableToolsExcel" getVisible="ContextualGetVisible" />
</contextualTabs>
<tabs>
<!-- Excel Menu Tabs, these are not included in the TabSets and
must be explicitely defined -->
<tab idMso="TabAddIns" getVisible="OfficeGetVisible" />
<tab idMso="TabBackgroundRemoval" getVisible="OfficeGetVisible" />
<tab idMso="TabData" getVisible="OfficeGetVisible" />
<tab idMso="TabDeveloper" getVisible="OfficeGetVisible" />
<tab idMso="TabFormulas" getVisible="OfficeGetVisible" />
<tab idMso="TabHome" getVisible="OfficeGetVisible" />
<tab idMso="TabInsert" getVisible="OfficeGetVisible" />
<tab idMso="TabPageLayoutExcel" getVisible="OfficeGetVisible" />
<tab idMso="TabReview" getVisible="OfficeGetVisible" />
<tab idMso="TabView" getVisible="OfficeGetVisible" />
...
</tabs>
</ribbon>
</customUI>