Empire and Jedi also use the yoke.
They do have 4 buttons and all are wired independently and recognized independently by the hardware, depends on the game as to what they do. Some games do have more than one function.
The yoke controller is also good for ANY game that uses a pot controller. Like Paperboy, Out Run, positional gun games like Jurassic Park and the Exidy gun games.
I can answer a lot of yoke questions since I own all styles of yokes. Star Wars, STUN Runner, Road Blasters and Hydra.
Basically only the Hydra and Star Wars yokes are good mame ones, as STUN Runner only goes up and interfaces funny and Road Blasters does not go up/down at all.