Mac – How to get a list of keyboard shortcuts that I use for the macros

I know I can find a list of standard keyboard shortcuts of excel in google or through Microsoft Office Help. But I have overwritten some of them (I wasn't using them) to assign for some of my macros that I use often. Now I don't remember exactly which ones I had overrode and I don't want to overwrite any existing useful ones, either.

I try to execute a combination of shortcut to see if it is already in use and what it does. But depending on your file/data, testing it sometimes would do nothing, even though that particular combination of keys are already assigned as a shortcut, so it isn't a guarantee way.

Isn't there any place in excel that I can just get the list of the active keyboard shortcuts? Excluding QAT (Quick Access Toolbar) shortcuts, of course.