Anne McCaffrey
Terry Brooks
J. R. R. Tolkien
C. S. Lewis
Aldous Huxley
Michael Crichton
Katharine Kerr
Theodore Sturgeon
Lin Carter
Philip José Farmer
Robert Bloch
Michael Moorcock
Hal Clement
David Brin
Ursula K. Le Guin
Terry Carr
Rod Serling
Dean R. Koontz
H. P. Lovecraft
George Pal
Kurt Vonnegut, Jr
BUT, Isaac Asimov tops my all time favorite. There are so many good ones, it’s hard to pick from. A LOT of good women authors as well. I tried not to include those on your original list but there isn’t a single one I haven’t read.
No Kilgore Trout?