Tom Lane is the best example of a 10x programmer that I have met. Really humble and nice too when you meet him in real life.

That's assuming that these people only contribute to PostgreSQL. I'm betting most of the folks listed here make major contributions on other projects or at work.

Your comment feels like a bit of unfair judgement, particularly since a lot of those you are implying that are 'only 1x programmers' are effectively donating their time.