I was just watching some of his highlights and don't think there is a more text book puncher than him. Who else would you say is? I know some may say Joe Louis, but he dropped his hands a lot.
Depends what you mean, but the highlights show Finito throwing some wide, looping punches that certainly aren't textbook. Is he really a more textbook puncher than some of the more compact guys like Rosario or Davila?
For me no one is more textbook than Mike McCallum, but Finito was more athletic to say something, so if you mix his athleticism with the knowledge of Nacho, you get a great fighter.