This classification system is deeply flawed but one of the most obvious ways is failing to recognize that quiche is an arbitrarily over specific example of what its category should ACTUALLY be called, which is obviously PIE.
PIZZA IS PIE TOO. The crust puffing up elevated at the edges contains the ingredients within.
And in this case, a stuffed crust pizza is indeed a PIE SURROUNDED BY A CALZONE.
then again, this is a a loop-shaped calzone... topologically, a torus. the chart doesn't even have an entry for that, but i'm ok with provisionally classifying it as a calzone
I feel like the chart needs a torus entry like some kind of filled doughnut, but I also think a rolled, filled torus is closer to a sushi roll than a calzone. I think everyone is just settling on calzone because we are talking about pizza and ignoring the structure and shape which is what this is about. How does a torus fit into the cube rule anyway? You can only consider it as the base structure which is a tube, ie sushi.
Your comment makes me think that we're missing (at least) one of configurations on the diagram, the one where two bases are perpendicular to each other. A slice of pizza will have that configuration, but I am too culinary-challenged to imagine anything else by that shape to name it after 🤔