Mounting compatability

From what I’ve seen, the Banebots RS-550, AM-9012, and FP (specifically the 0673) are all advertised as BB 500-size motors. Does this make their mounting configuration identical to each other, so that any gearbox advertised from AndyMark or Banebots or another supplier to fit one of these motors able to fit any of these that we would want to hook up?

I know the FP can mount to a 550 gearbox, as long as you trim the shaft a little bit.

Go to the BaneBots website, motor section. If all the motors you have will mount to the same BaneBots gear boxes, they must be the same, no?