Neumann is underrated. Everything might be relative, but one thing is sure: we are all reading this on a computer running on the von Neumann architecture.
I'm sure I will not find anything. But it would be interesting for people to analyze the outliers.
But, I've just learnt an anecdote about Neumann, Einstein and Godel.
When Neumann signed for Princeton, he had two conditions: a 16k annual salary (others earned ~2k at that time) and to bring in that two people who are smarter than he.
(Source, in Hungarian, someday we will have the subtitles from the AI: https://www.youtube.com/watch?v=pu6xoHlr0zk)
UPDATE: The talk is about miracles and geniuses. According to the speaker, a genius is somebody who sees something which wasn’t in the air, up until that time. Neumann wasn’t a genius, rather a polymath who saw all what was in the air at that time
Man, he was one of very few geniuses who is celebrated everywhere. May be not in pop culture but everywhere else.
On the other hand, in a sense, Neumann is truly underrated. I mean you can talk about him for days and still you'd barely scratch the surface. His genius is so mysterious to me.