My eyes were asleep, I was sure it said "Let's discuss our pantyhose". Which is very American?
Not all my writing has the same
pantyhose pantheon(s). Also for realism no religion is monolithic. Some Catholic Church Orders believe contradictory things and are really as much "denominations" as say Anglican, Methodist and Presbyterian. Compare Jesuits, Dominicans, Franciscans. Compare Mohammedanism, Mormons & Jehovah witnesses with Main Christian denominations. Compare Roman, Greek, Phoenetian, Scandinavian, Ancient Egyptian and Hindu polytheism.
Or Scientology vs Theosophy, Christian Science compared
I prefer to have a range of religions and beliefs in my stories:
People:
Atheists
Rationalists (Atheism / Humanism / Evolution as a religion)
Secularists
Agnostics
Nominal believers
Apostates / Heretics that still believe in something
Religious people / leaders that are really Atheists
Various schisms denominations
Ordinary believers
Madly fundamentalist
Missionary, evangelical, proselyting etc
Concerned about poor etc
People any workable mix of above
Religions:
At least one monotheistic were the God is the Creator, but he might be regarded as "Watchmaker" rather than "involved" through out history. There may be conflicting unrelated monotheistic religions on the same fantasy / planet at same time.
One that everyone else regards as made up (L R H springs to mind!)
One mysterious set of beliefs never explained of some niche group (so you don't know what who or if anything is worshipped)
One worshipping many gods that seem suspiciously to scholars like folk traditions of Tribal leaders ... There may be conflicting unrelated polytheistic religions on the same fantasy / planet at same time.
Maybe something else. i.e. Spirits represented by various specific animals.
It may be important to "living long and prospering" to not use any actual current religion (not because the god might strike you down, but his followers might.). But I think no matter what "pantheon" your fantasy has, it's not believable that everyone believes in it or interprets it the same even if they are in the same denomination. How many CofE or Roman Catholics can even coherently tell you what their Church really believes?