You'd expect a guy who uses "Big Six" as his handle to be a Christy Mathewson fan, right?
Besides Matty, I'd list, in no particular order...
Smokey Joe Wood
Lou Gehrig
Dale Murphy (my all-time favorite player)
Bob Feller
Charlie Gehringer (my grandfather's favorite player)
Ted Williams (my dad's favorite player)
Tom Glavine
Bill Carrigan (courtesy of my Pat O'Farrell dynasty)
Sean Casey (he played at the University of Richmond, and I followed him there)
Carl Yastrzemski