The Religion page on the wiki has now been revamped in order to hopefully be actually somewhat helpful, rather than a random mishmash of information: Religions of Avaria
Its emphasis is on the religions most common to the Adelantean and Sea of Sala'ah regions, where the gameplay is focused, but it still isn't by any means an exhaustive list. Obviously each faith needs to have its own page at some point, and a couple of them just get a little stub right now, but this is something I'll continue to work on documenting. In the meantime this should at least offer a brief run-down of some of the religions and deities that people in and around Omrazir would be most likely to know about, or even practice/worship themselves.
I was going to wait to post this until I got something written up about shamanism as well, but realized that was going to be such an expansive and diverse topic in itself that I decided to set that apart as a different project for now. But shamanistic practices are definitely also very important to some peoples and cultures in the region of play, so this will be coming!