If we're judging all-around talent, the best I ever saw on a baseball diamond were:
1) Mays
2) Clemente
3) Mantle
Yeah, Ruth was a successful pitcher, blah-blah-blah. He was also a fat chub who probably wouldn't do jack shyt around today's game. One guy who always gets under appreciated here is Mantle. Early in his career, he was probably the best all-around player in the game. Knee issues and alcoholism robbed him of what could have been an even better career than he had.
Another guy who probably deserves mention for all-around prowess is Jeter. How many guys did what he did year in and year out over that long a period? He was the definition of money. As time goes by, his name will probably start popping up in the discussion of best ever.
Clemente was hands down the best defensive outfielder to play the game.