I don't really see what you call a "Simple Factory" as being covered in the Gang of four book. I should have been clear about meaning Factory Method but the ter

I don't really see what you call a "Simple Factory" as being covered in the Gang of four book. I should have been clear about meaning Factory Method but the terminology is often apparent in class naming. So for the "Abstract Factory" pattern, I would use "Kit" in class naming. I would reserve "Factory" for the "Factory Method" pattern. Pointlessly wrapping constructors in a separate class and calling it a factory doesn't really get you anything. Neither does contriving a parallel hierarchy to pointlessly allow the use of the "Factory Method" pattern - something that I have also seen.