Some of these might be less than lesser known, but they've all done some **&%$##!!!!! great stuff:
Carlo Acto Datis
Ron Aspery, (Back Door)
Tim Berne
Dave Binney
Michael Blake
Arthur Blythe
Anthony Braxton
Patrick Brennan
Peter Brotzmann (sometimes kinda harsh)
George Cartwright, (Curlew)
Thomas Chapin
Klaus Dapper, (Kollektiv)
Elton Dean, (Soft Machine)
Jean Derome
Peter Epstein
Ellery Eskelin
Marty Fogel
John Gilmore (Sun Ra)
Vinnie Golia
Phillip Greenlief
Steve Grossman
Tom Guralnick
Rich Halley
Michael Hornstein
Andy Laster
Dave liebman
Jon Lloyd
Frank Lowe
Tony Malaby
Michael Marcus
Kurt McGettrick (Zappa)
Don Menza
David Murray
Joel Palsson
Bill Plake
Odean Pope
Dewey Redman
Yannik Rieu
Sam Rivers
Scott Rosenberg (Red, Owe cd)
Ned Rothenberg
Yochk'o Seffer
Nicholas Simion
David Slusser
John Surman
Gebhard Ullmann
Ken Vandermark
Bobby Zankel
John Zorn
Carlo Acto Datis
Ron Aspery, (Back Door)
Tim Berne
Dave Binney
Michael Blake
Arthur Blythe
Anthony Braxton
Patrick Brennan
Peter Brotzmann (sometimes kinda harsh)
George Cartwright, (Curlew)
Thomas Chapin
Klaus Dapper, (Kollektiv)
Elton Dean, (Soft Machine)
Jean Derome
Peter Epstein
Ellery Eskelin
Marty Fogel
John Gilmore (Sun Ra)
Vinnie Golia
Phillip Greenlief
Steve Grossman
Tom Guralnick
Rich Halley
Michael Hornstein
Andy Laster
Dave liebman
Jon Lloyd
Frank Lowe
Tony Malaby
Michael Marcus
Kurt McGettrick (Zappa)
Don Menza
David Murray
Joel Palsson
Bill Plake
Odean Pope
Dewey Redman
Yannik Rieu
Sam Rivers
Scott Rosenberg (Red, Owe cd)
Ned Rothenberg
Yochk'o Seffer
Nicholas Simion
David Slusser
John Surman
Gebhard Ullmann
Ken Vandermark
Bobby Zankel
John Zorn