Well, there was:
Girl's train.
13 States BiCent train. (The U36B was short, but SCL did have one. SL-SF had a caboose, but not the PRR cabin car type.)
Beer Cars.
Tobacco Cars.
Lionel Lines. (There was an UP FEF3 lettered that for a convention fan trip, however.)
Disney items. (Depression handcar,and modern trains)
Military and Space.
The list goes on............