No Random Empires
This mod forces every preset empire to spawn.
This mod forces the Commonwealth of Man to spawn as well, so if you want to play as Earth Custodianship, for example, you will have both of these empires in the galaxy. I created another mod that does exactly the same thing, but without the human empires. It is called "No Random Empires (without people)."
https://steamcommunity.com/sharedfiles/filedetails/?id=3429544525