That is probably not a proper diner. Most true diners have limited menus - this comes from not really having a kitchen. The original diners simply had a grill at the counter. Only later did they add full kitchens. Btw, Worcester MA is the home of the diner. They made most of them.

You will find however that most of those menu items come from mixing and matching basics. You have a few select proteins, whioch you dress up with various sauces. Eggs can be cooked multiple ways. And Sandwiches come from what essentially amounts to a salad bar.