Rogers isn't in the same ballpark as those guys. From reading his books, I take it he made something like $10 million in the early 80's after leaving Soros. Say $20 m on the high side. Even if you compound that at 15-20% per year, he may end up at what, the low 9 figures (say 100-200 m). Hard to say.
I believe all the hedge fund guys except Soros are relatively new to the list (from the late 90's to now). Kovner wasn't on the list 6 or 7 years ago. I have some old Forbes issues. He's been racking up some serious cash.