In Classics, I have been building up my knowledge of the primordial deities, the titians and the Olympians gods. Here are some small facts files covering them, (one from each time period) in the slide below. With all the sources I used linked to prove this information.
What are primordial deities, titans and the Olympians? - A brief explanation
The Primordial Deities are some of the first main gods that came into existence in ancient greek history just after Chaos. Titians are what is considered the middle or second generation of gods. Lastly, the Olympians, the well-known ones are the third generation of gods