As I mentioned in an earlier post, monotheistic faiths began to spread from the Primes to the Great Wheel near the end of the Age of Pain. Faced with extreme odds of making any headway in Sigil and other planar hubs, these different faiths were forced to work together. This often proved awkward, since Prime 'monos' (as the Old Cant lumped them all into one category) had a tendency to get hung up on differences relating to the uniqueness of each Prime. Nevertheless, the monos managed to survive (with no small help from the Athar), and even prospered. In the second have of the Revelationary Era, the relationships built in the early days on the Plane led to the formation of 3 "Trans-Faiths", with seperate monotheistic traditions joining the organization that most closely fit with their beliefs.
The 3 Trans-Faiths, and the religions that join them, are as follows:
Church of the Universal Prophet: religions that looked to the Outer Planes for guidance. Typically, prophets are a recurring theme in these faiths-hence the name. In Cant, they are called 'Flockees' or 'Sheep', thanks to the frequent use of sheperds in drawing analogies in their holy texts.
Society of Ring-Walkers: religions that focus on the recurring cycles of life, particularly on the Prime Material. Lots of 'New Age' themes, but it takes itself more seriously, acknowledging the gritty aspects of life and the natural world as well as the sublime. Thanks to their focus on the Prime Material, they are called in Cant "Super Clueless."
The thrid one (whose name I haven't come up with) is a mixture of early Bhuddism and turn of the 19/20th Century philosophy, particularly Neitzche. Help in the name-department, along with the usual comments, would be much appreciated.
I'm curious about the nameless religion you have there. Does it involve enlightenment? Maybe it can be called "The Enlightened" or "Children of the Enlightened"?
In the meantime, I'd like to add one more. "The Faces of God", a collection of henotheistic religions (one God but many aspects and names), typically mistaken for polytheism. This would cover Hinduism and many African religions. These religions, because of their nature, are quickly becoming a single religion as they each adopt each other's aspects of God into their own theology. Hinduism, as an example, has adopted both Jesus Christ and Muhammed as avatars of God!