[quote=@Lewascan2]
<Snipped quote by Guardian Angel Haruki>

I'm usually not too great at Cosmology, tbh, but a good starting guideline might be using the Cleric domains for inspiration.

Off the top of my head we need: Head God (domain ???), Life, Death/Underworld, Earth, Sky, Sea, Forge, Love, War, Trickery, Sun, Moon, Nature, and Magic.

If we wanted to condense this list more for simplicity, Death/underworld/Earth might be the same god or even Life/Nature/Earth. And for a twist, perhaps Love and War are also the same god. Trickery might be with Moon too. A domain of Fire could go with either the Forge, Sun or both, and Light might also belong to Sun.
[/quote]

No worries. Generally, I don't think I'm very good at World-Building... (haven't done it enough...^^")

The Head God is typically of the Light Domain (in my opinion), like the Sun. 
But we could do something different and maybe have the Head God be the God of Magic?

The only issue I see with a condensed list of gods and domains would be, for example, if someone wanted to play a Grave Cleric that basically accepts death and helps people move on, but fights against the undead (think Caduceus Clay from Critical Role Campaign 2), they would probably find issue with finding that the only god they can worship is an Evil Death God who promotes murdering innocent lives.