@RepDougCollins has released the Bill Priestap testimony before Congress. It's loaded with names, doubtless they will fill in the blanks. For starters we need 2 dig on the "He" mentioned early on that has been redacted. An Anon filed their thought that it could be Dana Boente.

Then, there's Rich Mains.

https://twitter.com/RepDougCollins/status/1113111621675728897

https://dougcollins.house.gov/sites/dougcollins.house.gov/files/Priestap%206.5.18%20Interview%20Transcript_Redacted.pdf