I would say that Cactus Jack and Mankind are introverts while Dude Love is an extrovert.
Cactus Jack and Dude Love seem to be more like sensors rather than Mankind who is more of an intuitive.
Cactus Jack seems like the most cold and calculated of the three, which would make me assume he's a thinker rather than a feeler. But Dude Love and Mankind are most definitely feelers, with Dude on the sanguine side and Mankind on the melancholy side.
Mankind seems more perceptive than judging, unlike Cactus and Dude.
So, in summation:
Cactus Jack = ISTJ
Dude Love = ESFJ
Mankind = INFP
Oh wow, I made Mankind out to be an INFP? That's interesting, since he's my personal favourite of **** Foley's three alter egos.
This was fun.

roud: