I do have some homebrew systems Ive been working on but nothing's really in a state I'm proud of.

Me and my girlfriend have been brewing a goofy system we refer to as 'the beef system'. It's gone through a LOT of changes and is still far from perfect but it's ultimately made for laughs and goofing around with my homies. It's a d20 system focused heavily around my experience with 5e since when I first made the first draft I had only ever played 5e.

I've been trying to make my own neopets roleplaying game for a little while. It's probably the closest to done and also the most simple. This one is a very simple d6 system. I understand you aren't interested in niche fandoms though.

I've put the most time into a sci Fi system but I understand that you aren't interested. It's the one that would need the most play testing but is also the least finished and most complex. This one is based a lot of starfinder but with tweaks that I felt the system needed and lore changes.

I've also written up and deleted a super hero system for a d10 system. It was going to use a dot system and purchases with exp similar to vampire the masquerade but I've never been happy with that one. Would love to talk out some of those details with someone.