I am an East coast boy, and i never heard of "Chopped Cheese"

Looks like you used ground beef on your sandwich?
On the east coast we use thinly shaved beef for the meat, (sauteed onions and or green peppers optional) provolone or american cheese slices (cheese wiz is optional), and a bread that has a soft but tough skin on the outside and chewy soft bread inside. A tomato based sauce is optional as well as sliced pickle chips, hot pepper rings, and my favorite is hot cherry peppers, or hot cherry pepper relish (aka hoagie spread)
That just about sums up a east coast cheese steak sandwich. Cheese steak hoagie would have to include raw onions, iceberg lettuce, and sliced tomatoes.( if you add Mayo it's now called a California cheese steak hoagie. LOL