And then there's the great Auto-Mod, who had Tomoyasu Hotei on guitars before he moved on to Boowy. I always considered Auto-Mod/Genet to be the secret grandfather of visual kei. It always felt like Kiyoharu got his early warbly voice in Kuroyume more from Genet than the obvious Robert Smith. The Tribute to Auto-Mod album really drives that home with Kiyoharu's epic Deathtopia cover.
And then there's Libido who I've gotten into recently who was connected with YBO2 and the Transrecord scene of krautrock. Their songs definitely had gothic moments both aurally and visually. One of Libido's early guitarists actually was one of the founding members of G-Schmitt before moving on to other projects.