Ethan's "Hungry Man's Cast Iron" Meatloaf
1 (8 ounce) can tomato sauce (such as Hunt's®… 1 tablespoon barbeque sauce 1 teaspoon onion powder, divided 1 yellow onion, chopped 1 ½ cups Italian bread crumbs 1 ½ teaspoons garlic powder, divided 2 (4.5 ounce) packages noodle soup mix (such … 2 tablespoons Worcestershire sauce, divided 2 teaspoons ground black pepper, divided 2 teaspoons salt 2 teaspoons steak sauce (such as A1®) 4 eggs 4 ½ pounds ground beef ½ (4 ounce) packet saltine crackers, crumbled ½ cup ketchup ½ teaspoon cayenne pepper