20+ backup directories, I'd like to dedupe all files to 1 "master directory"

As the title suggests, I have inherited a file structure where there are about 30 "complete or partial backups" of a fileserver full of text files. This obviously makes no sense, and I'd like to run a dedupe on this that produces one "master directory" which contains all the unique files from all the backups. (At which point I can then delete all the backups, and not actually LOSE anything). Yes, I realize file CHANGES are an issue, and in that case I'd like to keep the most recent file. I've looked through rdupes, and jdupes, and robinhood, and not really seen options to do what I need. Did I miss it? Is there something better that I haven't seen?