My understanding is the mono games were TMNT, GI JOE, Bucky O'Hare, and Crime Fighters.
The rest are stereo.
For the most part. Some games were converted to mono and my friend had a Turtles in Time he swears was dedicated that was Mono. Bucky O'Hare is an adaptable board so it can be Stereo or Mono depending on the settings. The only way to really tell is 1. the color of the joysticks(each Konami game has it's own wico colors), 2. if the sticker is still on the back.
I could see this as a Turtles to Simpsons conversion but I haven't seen it myself. Konami sold alot of kits for these cabs.
As for me I'm grabbing what I can as I'm working on a Bucky O'Hare myself. I just found the lost CPL and sent it off to get repoed so I'm hoping to have an art kit in the next three months.