C2 is central determination, which means the slot machine does not determine outcome of play, but rather a central server in the casino. It is used for jurisdictions that don't allow gambling vs the house. Basically class 2 is bingo made to look like a slot machine, you play vs other players at the location and the house keeps a certain percentage of the bet as an "ante". WSGC (Washington State Gaming Comission) is basically a class II game specific for that jurisdiction. None of the class 2 games will work stand-alone on a machine, they all require the central server for the game's outcome. The only machine or games you should be getting for home are Class 3 games, where the machine itself determines the outcome based on an RNG type algorithm.
22/22 games will work on a 22/32 with the top screen being vertically sideways, same with the 22/26 games.
The 22/42 will look correct on a 22/32.