David Bowie in his early days, that was considered glam rock, too. The rock band Sweet of “Ballroom Blitz” (and other hits) fame.
Glam Rock: 80s phenomenon that included Poison, Motley Crue, Cinderella.
Glitter Roack: 70s phenomenon that included David Bowie, Slade, the Sweet, and Gary Glitter.
Kiss is the bridge between the glitter rock of the early 70s and the glam rock of the 1980s.