There is also mention of a Federation of 9 'beings' who watch over the Universe and Earth who often pop up in Earth history. Who are these 'beings' and where are they in the 40K world?
3 Chaos Gods.
6 Eldar Gods.
Before the Fall we could probably count these guys on pretty similar power levels.
Post Fall we have 4 Chaos Gods and 1.5 Eldar Gods. The game changed.