Keller does NOT belong in the same breath as Musk and Jobs.
Jobs was mostly a business 'genius' who took the lions share of the credit for ideas realised by others like Wozniak - like a frontman for a band who takes the public credit for songs he sings, but did not write.
Musk certainly has a greater overall technical grounding than Jobs did, but don't be fooled - he's hardly some contemporary Einstein among engineers, he's still just doing what Jobs did.
Keller on the other hand is an actual expert/specialist, more Wozniak than Jobs - he just tends to get more credit than those around him due to being a more visible management fixture in several notable CPU development groups since DEC Alpha.
Even at the university level, often the true author of a big discovery can be overshadowed by the name of their mentor and head of any research effort.
I can't count the number of times I read the name of a specific professor called James Tour in relation to materials research work (graphene, ReRAM) at Rice University, and even though he often singled out the true author of the paper under his mentorship, those names slip my mind because his name keeps coming up afterward over something else - I suspect a similar fog lies over Keller's many collaborators.