I'm trying to make a reliable list of theoretical aliens species according to testimony and stories that have been circulating online.

The key word here is reliable because lots of disinformation and people in need of attention have been creating false stories for multiple reasons. We're not discussing those or the people creating said stories and yes I will be cherry picking the stories a lot.

I'm starting this list with the Grays also known as the Solipsi Rai. They are known under many other names and the stories would place them as complex beings who act and look different from one individual to another (Just like we human can be dangerous criminals like Charles Manson or beloved superstars like Taylor Swift... there's a wide range of variations is what I was aiming to say here) so we can't really say anything about them beside what they look like.