How many Gods do we have?

I was watching the trailer for 10,000 BC (movie) and a crazy thought struck me. Has anyone ever tried to list all the Gods that humans might have worshiped - over the years of evolution? I was curious to know the count of Gods that are/were being worshiped. Jesus, Allah, Siva, Brahma etc are present day favorites, but they didn't exist 4000 years ago. 4000 years is peanuts in the time-line of humans and human-looking ancestors, which is 1000,0000 years.

Wikipedia has tried a high-level listing of all Gods. Hindu, Finnish, Chinese, Lisutani etc.... make up the current list. And then there are the mythological Gods - Atlas, Prometheus, Zeus and a host of others.

Was a Neanderthal (100,000 years ago) or a 'Homo erectus' (1000,000 years ago) technically developed to think about a possibility of a supreme creator? If so, what would a Neanderthal's God be? Water, Sun, Stars and the Moon perhaps?

This is just the beginning. As you deep dive into evolution per se, there are enchanting and very interesting possibilities. What would a Dinosaur's God be? Godociferous, perhaps.
Dragon-fly, which is supposedly the ancestor for the entire animal kingdom has been around in earth for 700 million years (Compare humans!). If dragonfly worships a God, that would be the longest serving God in the entire chain perhaps.

I mean, if there can be Hindu-Islam and Christian-Islam wars, why can't we fight with the Dragon-flies over their Gods? Who is superior? Dragon-fly God has probabaly been around for hundreds of millions of years, and we rule the roost now. Was there a fight between Dragon-flies and Dinosaurs in history over the superiority of Dragon-fly God and Godociferous? Immense intellectual possibilities.

Wow. Life gets interesting as you think about it.