Soup ladles are ladles with a large, deep bowl on them designed to scoop soup out of a pot or a dish and serve it into a bowl.
Most soup tureens are designed with a notch in the lid that allows a soup ladle to rest in them while the lid is on keeping the soup inside warm.
The problem is, getting a nice enough soup ladle that goes with your tureen and that is “dressy” enough to put on the table. Silver is always the answer to any soup ladle, but it’s out of most people’s budgets. You can also get ceramic and very fancy stainless soup ladles now.