I’m talking:
The New Warriors
Initiative recruits (both new and already existing characters)
Prodigy and The Slingers
Loners
Young Avengers
Avengers Academy
Aegis
Ultragirl
Devlor
Vibraxis
Wild Streak
Etc.
By “middle generation” I mean those older than The Champions but younger than most Avengers. X-books have New Mutants still , but everyone else seemed to have been forgotten when Initiative ended.