What are the typical ingredient for Italian tomato sauce

While there are so many variations of making Italian tomato sauce, the typical ingredients are chopped garlic and or onion, olive oil, tomato paste, tomato purée, diced tomatoes and or crushed tomatoes.  You may use Basil and or oregano salt and pepper for seasoning.  It is also traditional to add pre boiled pork neck bones, sausage, meatballs or other meats to the sauce.  Sometimes other vegetables are added like mushrooms, green peppers etc.  Many recipes exist.  Buon Appetito!