Most making canotto style probably are using Nuvolo Super, but after doing a lot of testing with that flour, it isn't the magic bullet here. I can make pizzas just as puffy with all trumps or any other American high gluten flour. The difference with that flour is that while it will produce dough with that amount of lift, Nuvolo will be a little bit more tender than the others, more like a lower protein flour.
The way to get that puffy high cornicione is high hydration and fairly high heat along with the most important factor here.... a strong dough. Most of this style are made with a Biga.