Kathy Love, Abbot's line, Mike Heinrich, Chip Bridges, Howie Sherman (www.strikersherps.com).
I have no personal experience with any of these, all I've seen is the pictures. I got this info from cornsnakes.com's forums because somebody asked a similar question on there a few weeks ago. I don't know if you'll be able to see these pictures unless you're a member at those forums, but here's the thread (there are pictures here)
http://www.cornsnakes.com/forums/showthread.php?t=17947&page=1&pp=10&highlight=okeetee
also, here are some of Chip's Okeetees
http://www.cornsnakes.com/forums/showthread.php?t=13933