@amishgamer Yeah, I forgot to use Clone Spy for automatic removal. Found out about that two days ago. Also, there are a few more differently named duplicates that I'm slowly removing for a full release.
I'm currently working on my ideal ROM set of USA>World/Europe>Japan, but I suppose I can fix up those batch files in the meantime.
Also, I just found out about this simple program for building ROM sets. https://retropie.org.uk/forum/topic/15233/mame-set-rebuilder