I listed a few "TNA" guys but they still wrestle 6-8 indy dates a month and TNA is an indy that runs out of a theme park studio, so it isn't major league by any stretch.
Danielson
Homicide
Danny Maff before he got blackballed
Joe
Super Dragon
Hernandez (wrestles all Texas indies)
Briscoe Boys
El Generico
Joey Ryan
Nigel McGuinnes- deserves the ROH strap so bad it's a sin
Jack Evans, Delirious, Teddy fuckin Hart and Necro Butcher