Killer Instinct 2 currently has a Raspberry Pi3 B in there with a pi2jamma interfacing with the cabinet. So it's a MAME cabinet right now. I can put it back to stock very easily though once I fix my KI2 board. I also have KI1, MK1, and MK2 that are all working and plug/play easily into it.
Maximum Force cabinet was a pretty big project. I have an 8 way JAMMA switcher in there and there are 7 boards inside of the cabinet. I built "shelves" to mount them all to inside of the cabinet. The 8th slot is external and I have a longer cable running on top of the Rush 2049 SE cabinet right next to it, so I can swap games on the 8th slot without having to go inside the cabinet and open it up. I have like 15 or 16 light gun games now I think.
Then both Rush 2049 SE cabinets are just 100% stock and linked together.
I don't really have more room down there or else I'd probably get a trackball cabinet.
The way I understood it was that CEO was Capcom focused since SF4 era, which was by far the most popular game at the time. Jebailey made CEOtaku to cater to anime audiences. I'm also specifically talking about these 3 series, at the same time.
I'm only now finding out that CEO 2022 was not Capcom Pro Tour sponsored.