There was this thread, which covered dialogue differences.
But that’s a pretty easy topic to cover in a few posts. I think the only thing missing from the discussion is the Empire mono mix, which wasn’t discovered until after that thread was done. The Jedi mono mix doesn’t have any dialogue differences, just missing sound effects. And the UHDs, I suppose.
I think it may be possible to do a similar one for pre-97 audio mixes, but there are just so many changes in the SE’s (and changes to the changes, etc) that it’s likely to sprawl.