In no particular order.
Bill Burr (his current special on Netflix is a riot)
Louie CK (saw him live last year. he's at the top of the game right now)
Jim Jeffries (Australian that I saw in a small club in NYC last year)
Richard Pryor
George Carlin
Ron White
Patrice Oneal (died last year, but he was going to be huge)
Eddie Murphy
Joan Rivers (not the tv stuff. her live stuff was very blue and hilarious)
Jerry Seinfeld