It's true that the unconscious way he came about his theorems puts him in a different category to other famous names. But I wouldn't rank him as highly as Von Neumann. That man made groundbreaking results in the foundations of mathematics, pure and applied mathematics, early computer science, quantum mechanics, economics, and more. I think Von Neumann might arguably be the most significant genius of the 20th Century, paralleled in history only perhaps by the likes of Newton and Leibniz.

Einstein made a few extremely valuable insights in theoretical physics, but I'd say the sheer breadth of comparable work that Von Neumann did across multiple fields makes him more outstanding.

yes, but the contrast is striking: Von Neumann had privileged upbringing and education Just imagine what what Ramanujan could have been if he grew up in Von Neumann household

Ramanujan wasn’t poor. He went to school and had access to many math books which he studied and was recognized as a child prodigy early on.

He studied very hard and was exceptionally gifted, it wasn’t a mystery.