The problem with naming them is that then it becomes a discussion on whether the people I've named are impressive. Someone mentioned Einstein and was downvoted. Einstein is very obviously more interesting and accomplished in my mind than Elon, but he's one of many. Turing was 23 when he wrote his thesis on algorithmic computation. There are people with multiple turing awards out there.
If your yard stick is "rich person who made more money" yes, or "CEO who makes memes", or "is a celebrity", Elon is impressive relative to the general population. It's a sad, sad way to measure accomplishments, but sure.