When it comes to describing actors or actresses who have played leading roles, the phrase "most starring" is a common way of conveying that information. However, there are other words and phrases that can be used to describe this, such as the "main roles," "leading character," "protagonist," "headlining," or even "top-billed" roles. These alternatives offer a variety of ways to express an actor's importance in a given production. While "most starring" is a straightforward and simple way to describe an actor's role, it's always beneficial to have a range of vocabulary to choose from to make one's writing more interesting and engaging.