Is there an accepted pantheon of God’s and/or can…
Whilst there is flexibility about what your call your god & their/your story, there are a fixed set of domains. Your god will be ‘defined’ by up to two of these domains from which the spells of priests will come (in addition to some core spells). When you are creating a priest you will need to submit a paragraph describing your god to the DT, alternatively there will be set pantheon from which you will be able to choose a god from.