Have you ever hired or met a great developer named Mohamed?

Nope.

(Although in fairness some people called him "Mo". He was very productive and prolific and increased the group's revenue. This led to the obvious jokes about how Mohammed was his profit.)

I have, but often the dev went by their middle name or some other anglo-ized name since (as you point out) Mohamed is a really common name. I've worked with people named Ali, Amir, Bahar, etc who's name was Mohamed Ali or Mohamed Amir.

Like @kognate, I have worked with someone where their full name was XXXXX Mohamed Ali. I guess you'd say their middle name was Mohamed.

Our architect as SpaceX was named Mohamed; he went by 'Mo'.

Yes, I have.