Some Arabs can be pretty smart too tho most of the countries which embrace Islam are not known for their brilliant minds.
I still would put my money on the Jews, especially the ones who came from central and Eastern Europe.
I remember when Edward Teller spoke at Troy University, some students asked him who he thought the greatest Physicists and he named several and he admitted he had a soft spot for the ones from Hungary, where he was from. I think all of them had Jewish names and came from Budapest.
How did that place produce most of the world’s greatest physical scientists?
Another thing which bothers me is the Germans continued to do very well even after they ran the Jews out. I suspect they would have done better with the Jews but they were no dummies themselves.