What gods exist seems to be entirely dependent on how the gods came to exist.
For example, if they are the product of the belief of a large group of beings, then there could be gods that cover any aspect of the groups existence. In this example, we could have gods of footpaths, florists, feet fetish, foundries, fathers, finance, and the privy.
If the gods were created from primordal forces, then they would represent the basic forces of the universe. There could be gods of gravity, electricity, metal, rocks, sound, liquid, gas, acid, light, radiation, magnetism.
Gods could also represent basic emotional states. There could be gods of anger, love, nostalgia, whimsy, frustration, apathy, desire, or even a lack of emotion, say, rationality.
Basically, there has to be some consistency with the gods though, to make the world believable.