So far the winner is Ian Wilmut, who cloned the first mammal, Dolly the sheep.
I should have included another option to indicate the possible preference that NO ONE should have been given the honor along with Yamanaka and Gurdon.
In other words, the option that the Nobel committee got it right by only giving it to two people instead of three as it could have done.
In the comments another suggestion was for Irv Weissman of Stanford.
Interestingly, folks have privately contacted me to tell me separately why each individual in my poll should not have been picked so there are a lot of strong feelings out there.