Gonna pass the Pineapple thing we all know that. The real question is.

New York Style
Philadelphia Style
Chicago Pie Mush

Will go over each for the uneducated

New York Style - This is what most think of when they think "Pizza" big ol' slices most similar to Italian, and the stuff you get at Costco


Philadelphia Style - This is the other "Deep Dish" pizza, but with the sauce on the bottom where it belongs, cheese on top, and toppings above that. These are usually cooked in smaller sizes to prevent the cheese burning issue on top that the people in Chicago couldn't figure out before dumping a vat of sauce on top. Usually have a fair amount of sauce but a very thick layer of cheesy goodness with the usual toppings. If you order a larger one sometimes you'll find it's actually multiple smaller ones together, again to solve the cheese burning issue. These are often cooked in square shapes, and are objectively the best pizzas.


Chicago - Pie - They decided to ruin the good name of Pie instead of pizza, while pizza doesn't deserve to share a name with this monstrosity, neither do Pies...poor pies. - This is usually what people think of when they think "Deep dish" because of the heating, the cheese is beneath it, and the ingredients are in a vat of sauce. This is to cook the ingredients and melt the cheese without burning it because it's so thicc. This is again, basically a vat of sauce with drown out flavors.