E.T. Races & Species

Hey EA, 

I'd love to know more about the different species that interact with humanity or have some kind of interest in our situation.

Who are they? How do they look like? What interest do they have? How do I realize that I may have roots in that race?

Especially I am interested in the Yahyel and the Sassani. I've read that they are human hybrids of 5. and 3. Grade. Why and how were they created? How many other races are created with human DNA?

... So many questions 🤔 😊