Well, this will tick a lot of folks off, but the only multi-dimensional athlete on that list is Barry. In fact, I would argue that baseball is our only sport that requires excellence in multiple areas to be considred a "great".
Bonds is a five-tool player. In his prime he could hit, hit for power, run, field and throw. Many forget that he started as a center fielder, one the two most demanding defensive positions on the diamon (shortstop is the other).
At 40, he isn't the defensive star he once was, and his speed on the basepaths has been diminished, but then that 's not as valauble askill as it was when he came up in '86. But he has demolished the single-season records for OBP, OPS, slugging percentage, walks and homers. He will very shortly be the third man to hit 700 career homers. At 40, his OBP is .612 (the MLB record is .585 and it's Barry's), he's slugging .828, a tad below his own record of .863. Going into tonight's game he's walked 198 times, which ties his own single-season record. No other athlete alters the strategy of the game he plays the way Barry alters a baseball game.
One could reasonably argue that his skills are the result of winning the gene pool, because his remarkable visual acuity and hand/eye coordination are largely responsible for the above records and his amazing control of the strike zone. But nonetheless, he's in uncharted waters. We've never had a ballpalyer - even the Babe - who was this old and we are still unable to define a career peak. He does what Ted Williams called the hardest thing in sports - hitting a pitched ball - better than anyone alive and anyone I've ever been fortunate enought to see. I'm old enough to have seen Willie Mays, Mickey Mantle, Hank Aaron, Frank Robinson in their primes, and Teddy Ballgame in his twilight years. Barry is simply the best.
The rest of your list are One-Note Johnnies. Does this mean he is the greatest American athlete? I'm not sure that's something that can be easily defined. But I do know he dominates his sport, even at 40, in ways none of the others dominated theirs, even in their primes.
Yes, I'm a huge baseball fan.