Remove large outer leaves from the heads of lettuce. Arrange approximately 1/3 in a layer on a large serving platter. Sprinkle with 1/3 garlic powder, 1/3 crushed oregano and desired amount of Italian-style salad dressing. Layer with cooked ham and Provolone cheese.
Layer Provolone cheese with another 1/3 of the lettuce leaves, 1/3 garlic powder, 1/3 crushed oregano, desired amount of Italian-style salad dressing, Genoa salami and Capacola sausage.
Repeat layering with remaining lettuce, garlic powder, crushed oregano, Italian-style salad dressing, pepperoni sausage, prosciutto and roast beef.
Layer with mushrooms, marinated artichoke hearts, roasted red peppers, black olives, pepperoncini and pimento-stuffed green olives. Sprinkle with more Italian-style salad dressing, as desired.
Top with Gorgonzola cheese, mozzarella cheese and Parmesan cheese.
Cover and chill in the refrigerator until serving.
Nutritional values listed may vary from final results depending on actual measurements and brands used to prepare the recipe.