This is anecdotal, but growing up in a Christian church, I saw a lot of SJs (all types) and SFPs, followed by NFPs and NFJs. There were comparatively fewer STPs and almost no NTs. A lot of people I meet who are interested in the spiritual and mystical (but not so much the Judeo-Christian concept of God) are SFPs, NFs, and, to a lesser degree, NTs. In my own experience, most likely to be atheists: NTs, STPs, and, to a lesser degree, NFJs. As a Protestant Christian myself, I have often felt very alone, and it's always a pleasure when I meet the rare INTP who shares my beliefs.