The #9 Italian Night Club is a cold Italian sub engineered around a hard constraint most subs do not have: it is built to be assembled in seconds and eaten away from the counter, often after a delivery run, so every design choice protects the sandwich against time and motion rather than against the toaster. Genoa salami, Italian cappacuolo, and smoked ham are shingled with provolone on a French roll, then dressed with lettuce, tomato, onion, mayonnaise, an oil-and-vinegar pour, and an oregano-basil dust. Nothing is heated. The defining decision is that the whole thing is a no-cook build optimized for speed of assembly and survival in transit, which is a different problem than a deli sub solves and shapes the sandwich accordingly.
The craft is in the roll and the dress as a transit system. The bread is a soft-crusted French roll, lighter than a hard Italian loaf, chosen because the sandwich is eaten quickly rather than held for an hour and a heavy crust would only fight a fast bite. The meats are sliced thin and shingled so each bite carries salami, cappacuolo, ham, and provolone together rather than a band of one, and the thin slicing keeps the cured pork pliant in a cold build. The dress is the moisture-management problem: mayonnaise seals the crumb against the tomato, the oil and vinegar season the meat directly, and the dry oregano and basil land on the surface so they read immediately. Lettuce is shredded for even cool crunch. Assembled in one pass and wrapped, it holds its structure through the ride, which is the entire brief.
The variations stay inside the cold long-roll family and mostly change the meats or the carrier. A leaner reading drops a meat; an unwich swaps the roll for a lettuce wrap and keeps the filling; a hot parm or meatball build on a different roll is a different sandwich entirely. The cold Italian sub sits on a broad regional map of hoagies, heroes, grinders, and wedges that share the architecture under other names. Those are codified builds with their own rules and their own partisans, and each deserves its own article rather than being crowded in here.