Ahmed, Saladin 20
Alexander, Lloyd 21 The first fantasy author I read. The Prydain series is great, and still holds up. Besides, an upvote here is an upvote for Gurgi, and who doesn't love Gurgi? Also, it was revolutionary for it's time in that the toughest, smartest, most independent personality in the book was a girl, even if she wasn't the main protagonist.
Anthony, Piers 20
Augusta, Lady Gregory 20
Bear, Elizabeth 20
Brooks, Terry 20
Bulfinch, Thomas 20
Cook, Glen 22
Froud, Brian & Alan Lee 20
Hickman, Tracy & Margaret Weis 20
Hodgson, William Hope 20
Jemisin, N.K. 20
Jordan. Robert 20
Kay, Guy Gavriel 20
King, Stephen 17
LeGuin, Ursula 20
Lynch, Scott 20
Martin, George R.R. 18
McKillip, Patricia 20
Mieville, China 20
Peake, Mervyn 20
Pratchett, Terry 21
Rothfuss, Patrick 18
Salvatore, R.A. 16
Sanderson, Brandon 20
Smith, Clark Ashton 20
Tolstoy, Nikolai 20
Wolfe, Gene 20