Patrick Martin said:to reiterate, if we are looking strictly at the musicality, those acts I mentioned possess that particular "candy" sound—which I suppose is this peculiar fusion of rock and bubblegum pop. In my view, those two qualities define them musically.
So, you have Sweet and Slade right at the forefront, whereas T. Rex feels more like a sort of rock, funky, sexy guru band to me.
The others (Bowie, Roxy Music, Queen, etc.) are certainly unique, but they don't quite strike me as the true archetypes,
but hey, that's just how I see it.
Regarding T. Rex, people claim Marc Bolan is the father of Glam rock, but personally, I feel T. Rex, Sweet, and Slade occupy a similar space; still, I'd say blockbuster by Sweet is the ultimate Glam rock anthem.
I was just browsing Wikipedia, and it mentions that Abbe, Queen, KISS, and the like are also categorized as Glam rock groups, though I don't really perceive them that way myself.