Chronos:
If you’re willing to stretch to “living in modern times” rather than “living today”, Richard Feynman qualifies. His primary strength was physics, of course (he won a Nobel Prize, after all), but he excelled at pretty much everything he set his mind to, and he set his mind to a lot of things. Just a small sampling:
*He was good enough at safecracking that he could open any lock at Los Alamos during the Manhattan Project in a maximum of a few hours, and most of them he could open in seconds.
*He trained his sense of smell to a point that he could determine from smell alone whether someone had handled an object, and who it was.
*He had sufficient skill with bongo drums and painting to sell recordings and prints on their own merits.
*He could perform numerical calculations in his head faster and with higher precision than the (admittedly primitive) machines of the time.
Also an expert in (IIRC) the Mayan language, such that others in academia studying it would consult with him.
I believe he deciphered the Dresden Codex despite having never studied the language before (or at least he figured out that it was describing the appearances of Venus).