I would say the most athletically gifted fighters are probably Gamboa, Pacquiao, Judah, prime Mosley any guy with fast hands and feet who rely mainly on those attributes when they fight.
Nonito Donaire to me is a special fighter, Roy Jones Jr. always praises this kid and considers him his top p4p for a reason.
Technically sound, 168 maybe?
Most athletic division? All those guys floating around 140/147...Bradley, Khan, Floyd, Pac.
Most athletic? Ward or Gamboa