Which of the following is NOT a category of exterior finishes?

Composite is the correct choice because it does not represent a distinct category of exterior finishes in the same way that masonry and non-masonry do. Masonry generally refers to materials such as brick, stone, and concrete block that are used in traditional construction methods, imparting durability and aesthetic appeal. Non-masonry encompasses a range of materials that do not fall under traditional masonry, such as wood, vinyl, or metal siding.

In contrast, composite materials are often a blend of various substances designed to achieve specific properties, but they do not typically designate a singular category within exterior finishes. Hence, classifying exterior finishes into distinctly recognized groups like masonry and non-masonry while regarding composite as a specific type of building material illustrates why it stands apart in this context.