Here is my version of the ExcelRibbonControls file for Excel 2007 from MS.
Maybe useful ?
2007 Office System Document: Lists of Control IDs
After you install the files In a new folder (24 files) you can find a file called ExcelRibbonControls.
I think it is easier this way to find what you want.
This file will help you to find the names of the build-in controls and icons (imageMso)
in all groups in the Ribbon tabs, Office menu and QAT.
You can select a group in the dropdown and see the picture of the group next to it and the
data below show you only de controls in this group.
Ron de Bruin