well F's care about what others think and won't just shit on them. P's in general are easy going, but if you have an F paired with a J, that's pretty cool too. to me, the most sociable people are: ENFP's, ENFJ's, ESFP, ESFJ's.
This definition of the ISTP sounds a little intense.
It might depend on the context. Sometimes P's seem more opinionated than J's because their internal thinking is more structured? From what I understand the ISFP and ESFP might be the most laid back. I did read that the ISFP is the kindest of all the types.
The first man to raise a fist is the man who's run out of ideas. H.G. WELLS
The first principle is that you must not fool yourself, and you are the easiest person to fool. FEYNMAN If this is monkey pee, you're on your own.SCULLY