LOL @ whoever thinks Hermione is an INTP.
Really? wow.
There is no doubt she is an xNFJ. She's a fighter underneath her clean cut appearance. That's why she's a Gryffindor. She's a J. She leads Harry throughout the 7th book. If she was a P, they never would have made it anywhere. Think about how she had her beaded bag pre packed to leave at a minutes notice from the Burrow at the beginning. She had a better plan than Harry who has the classic INFP approach of not knowing where to begin.
I've read ever book at least 3 times, so here's my little list:
Harry:INFP- he fits the pieces of the jigsaw puzzle together faster than Ron and Hermione do. He's such an N it's crazy. He pieces it all together in the 7th book
Ron: ESFP- No arguing needed.
Hermione: INFJ- See above.
Dumbledore: INFJ. He was wise, goal oriented, freedom fighting, equality based, extremely modest, and has his head put on the right way his whole life (except his little adventures with Grindelwald in Godric's Hollow)
Voldemort: INTJ. He wasn't an ENTJ. So anti-social with terrible social skills it isn't funny. He never reveals anything about his past to anybody. Nobody knows him, really. He's a plotter, an awesome strategist, and in no way does he rely on the external world to revive him.
Sirius: ESFP
Lupin: INFP
James Potter: ESTP
Snape: INTP
Lily Potter: ENFJ
Malfoy: ESTJ
Luna: INFP
Neville: INFP
Ginny: INTJ