Welcome to the forums!
This may help a little. It’s a spreadsheet which clarifies cross-compatibility of various edits based on their content. It’s a little out of date, so some edits of the past few years aren’t included:
https://www.dropbox.com/s/v1gsvynwh11cg3j/SWprequelcompatability.xls?dl=0
And, since you’re new, feel free to search IFDB.FanEdit.org for a more thorough account of the (vetted) Star Wars fan edits out there, new and old.