Looks interesting.
In your world, do deities tend to follow a similar model to the FR system of divinity, gods etc?
Not sure if I follow a "FR" system or not, depends on how you look at it. But probably?
I have about 5 major pantheons (like greek or norse for example) that religions are based on. Demons, fiends, powerful entities in addition.
Those cover geographical and cultural areas. This means that although I may have dozens of gods, as the DM I can work most NPCs as followers of the "Imperial Temple" or one of the others. Clerics tend to chose/identify with a single deity out of the pantheon, but don't have to.
Some of those deities used to be part of a pantheon, and now have their own religion, with them as a singular leader. Others wear different faces and belong to several pantheons at once. Others just seem to have come out of nowhere.
No one religion or deity claims to have created the cosmos or existence, although they may claim creation of a race or a specific world. They mostly acknowledge others exist, with each following their specific goals/mandate.
Gods are also "mostly" basic d&d immortals in stature, entities that followed a path to power and became divine. So "little" gods if you will, but still massively powerful in comparison to characters and the world. Since my homebrew posits the universe is full of worlds, there are a lot of powers/deities, but I usually stick with a usual grouping, denoting the "local" cosmic landscape.