I just going thru 32 2013
ATB Nebraskas which yielded 10 different varieties. With 176 varieties listed on Wexler it seems not finding any is improbable. No "Best of" though. I am sure there are those out there dedicated to find them all. If that is you, I may be able to help you out with something you may be looking for. I don't have much interest in them.
Just thought I'd share.