Good one. I'd add Wilt Chamberlain. His NBA exploits are well known (mind-blowing actually), but he was the Big 8 high jump champ at 6'6" (at a time when the world record was 7 foot even), threw the shot over 53 feet (WR was around 62 feet), ran a sub 50 second 440 yd (WR was about 45 seconds); keep in mind he was doing these at the age of 18-19, at 7'2" and weighing nearly 250 lbs, and not specializing in any of them. He also played professional volleyball, and could bench press over 500 lbs (and was doing 450+ at age 60).
One last note on his NBA career; while they changed the rules to make it easier for Jordan (carrying or palming violations just disappeared), they changed the rules to make it harder on Chamberlain , such as widening the lane to where it is now and outlawing offensive goaltending (many alley-oop dunks currently allowed would have been offensive goaltending in those days).
Alleged bedroom gymnastics were not considered in this evaluation..