Does such a player even exist?
Cancelo is like this weird combination of a quick agile winger, whose good at creating chances (perhaps not at taking them), excellent ball control, but also can defend when he needs do (and runs his ass off).
Most players who have those qualities (minus the defending) would demand to play as a winger, and never as a fullback, and would be good wingers too (like Cancelo).
Basically, I guess we have to convert Cancelo-like wingers into fullbacks, I don't think fullbacks naturally are like this.