Other possibilities are strawberry or other fruit flavors, or (particularly in marbled coffee cakes) cinnamon and/or other spices.
The deep butter was used for deep butter coffee cakes.
It has characteristics of both pound cake and coffee cake.
Gooey butter cake is generally served as a type of coffee cake and not as a formal dessert cake.
The current version is a coffee cake, and is oblong and braided.
Beyond these classifications, cakes can be classified based on their appropriate accompaniment (such as coffee cake) and contents (e.g. fruitcake or flourless chocolate cake).
Under this definition, a coffee cake does not necessarily contain coffee.
