This ... is amazing ... utterly amazing - I've a few problems with some of your choices though. Sorry to be so pedantic and raining on your parade, but this is still an utterly amazing thing you've done!
i) Religions named after civs - it just seems a bit odd if France founds the Mongolian religion or if Japan founds the Persian religion. Would it be possible to change these to some name that's perhaps less nationally loaded - e.g. change Norse to Ásatrú?
ii) Catholic, Coptic, Mormon, Orthodox, Christianity? Surely it'd make more sense to change Christianity into Protestantism (or to further divide that up into Episcopalian (Anglican's too nationally loaded), Quaker, Presbytarian, Lutheran etc.)? Obviously it's too many to include all of them but I think having Quakers (much more historical significance) replace Mormons (apologies to any Mormons on the boards) and have Protestantism replace Christianity would be good.
iii) Sufism - I know it's called that, but for the sake of consistency wouldn't it make more sense to call it Sufi Islam? As it's Shia Islam and Sunni Islam.
iv) Isn't Bahai spelt Bahá'i?
v) Is there any real need for Scientology? Historically it's had very little significance at all (being very young) and estimates of its membership are between 100,000 and 500,000. It's entirely possible that as a present day religion it's even smaller than Zorastrianism. Culturally it's insignificant too, known more for lawsuits than for any great architecture, music, philosophy or literature.
vi) Atheism and deism - I'm not sure that they'd work as religions in a civ game - I'm an atheist myself and although I'm one of about three that accept that it is a religious belief (even though it involves rejecting the supernatural) you don't get atheist temples or atheist holy cities or atheist missionaries (per se) or atheist miracles at the city walls. Ditto deism. It wouldn't really work in civ unless you lumped up atheism, agnosticism and deism and made them into a religion civic.
Despite this huge list, this is still an amazing mod!