Hmmmmmmmm
That's an idea...
A short dictionary of acronyms in common usage
followed by
A dictionary of all the acronyms.
Difficult to do in a spreadsheet.
However, we can easily do this:
A short dictionary of acronyms in common usage
followed by
A large dictionary of acronyms not in common usage.
So, if a person can't find it in the first dictionary, he looks at the second one.