From NY which is a blend of everything so:
Sausage and peppers preferably with broccoli rabe sausage from the pork store, fresh Italian Bread, fresh prosciutto bread which is called pizza bread in Jersey, knish with mustard, potato pancake (sour cream because applesauce is just wrong), Jamaican plantains with coca cola sauce and pineapple soda, Mamouns falafel in the village with the best baklava ever, cheese fries with gravy in a diner somewhere around 2am, pizza both Neapolitan & Sicilian, and Ralphs Ices which are Italian Ice.... and of course zeppole.
In Pa I discovered that they have a mini version of a knish which isn't crispy but is wrapped in a pasta like wrapping called a pierogi sauteed in butter and onions & served with sour cream, here they love a tomato pie which is a sicilian without cheese, they do not call it Italian Ice and call it water ice instead, pre Lent they go bananas over Fastnaught which are a yummy plain donut like pastry, New Years Day is all about ham and sauerkraut, and all the deli counters have eggs soaked in beet juice which are a local favorite, although I have not been brave enough to try one in 20 plus years.
Up in Mass its lobsta roll and oysters are selected based on the waters they called home, at first I scoffed but truly there is a difference in taste - go figure.