fwiw, my criteria is:
1. plays music written by producers/managers/label
2. public/personal life largely controlled by label (this one is subjective, i know, but important)
3. are part of a marketing strategy to sell items other than music
the pistols only meet 1/3 here
So, taking #1 into consideration, let's bring in some comments by a certain D. Albarn concerning a major star annnnnd would you look at the time; got to log off.
I think there's a little bit of both/and going on though. I seem to recall an interview with Lydon where he said the Pistols were intended (by McLaren, I guess) to be 'the Rolling Stones to the Bay City Rollers' Beatles'
Can you expand on 3?
And I think you need to draw some distinguishing factor for, say, Miley Cyrus when she was mostly owned and controlled by Disney but obviously not a girl group even if there's a similar thing happening.
I always thought of boy band as"don't play any instruments but all sing in the same vocal range" (which excludes vocal groups like The Four Tops, who have tenor, bari, falsetto, etc).
This is all way complicated.
I'm reluctant to even call the Monkees one even though they started out that way, since Nesmith and Tork worked so hard to get out from under it, and really only Jones had the conventional pretty-boy-controlled-by-managers background before joining the group