Thread:NerdWithAKeyboard/@comment-24859393-20190812212717/@comment-29644557-20190813053802

Up to you. If its called "Unpublished Villains", then I would do just that: villains that never made it into any forms of final publication with the exception of behind-the-scenes stuff. For example, KotS Yzma never made it to a form of publication save for behind-the-scenes and her song being released. TSW Vader was eventually adapted, so either he gets no page or one in a special category.