I never understand why people insist that INFPs are priests. Paladin could easily be considered INFP. The whole crusading theme fits quite nicely into their repertoire.
I don't think Pallys are INFP at all. They come across like ExFJs to me, obsessed with justice, very militaristic. I'd put INFP with Balance/Resto Druids & Shamans, with Priests close by (although I think Priest fits INFJ a little better).