Gamestop controller PCB question

Does anyone know if these controllers have a common ground? Do they use the same PCB? I haven’t been able to find a diagram for any Gamestop controllers.

That second one looks almost like a 4716, if you ask me.

If you don’t have these, just buy a 4716, or better yet, get a fightpad.

If you have one, just open it up and take pictures. We’ll be able to tell from looking at the PCB.

The first one is a PDP and last I heard they are not common ground.

The second is a Madcatz rebranded for Gamestop. I have not checked that particular model, but it has a good chance that it is similiar to the 4716 and common ground.