Hmmmm....
This is very interesting to me.
Me = ESTP
My Dad = ESTJ
My best friend = ESFP
My best friend and I are so much alike it is not even funny. Both bodybuilders, both looney as hell, both very active while speaking (arms waving, jumping up and making faces, whatever necessary to give life to our topic) and both full ojn for having fun/being silly over any other possible mode of operation.
My Dad's persona is very, very similar to mine if I am at work. Still very lively, still active, still fun, but task oriented. He has a much better sense of protocol and organizational tact (33 years in the US Army, retired as a Colonel) but he can crack a joke out of nowhere if he wants to, but please God, do not get in the way of what he has conceived of as a schedule in his mind. I am serious and determined, but my Dad takes that to a whole different level.
Another good friend of mine is ISFP, and he and I are only similar when he is in a lively mood, otherwise there can be stark differences. His sister, another very good friend of mine is INTP. Her and I hit it off big time on humor, but she is very reserved and calculating, and I am very glad I never pissed her off in the 25 years I've known her.
I'm looking forward to the responses of others...