Overshadowed by bandmates
I was listening to "Real Time" a live CD by Richard LLoyd, the "other" guitarist to Tom Verlaine in Television. It occurred to me that, while I like Verlaine's style, I ultimately prefer Lloyd's playing. I just didn't really appreciate it till he left the band and crawled out from Verlaine's shadow. This got me thinking. Until he left to start World Party, Karl Wallinger was obscured by Mike Scott while they were bandmates in The Waterboys. Now, I'll take Wallinger over Scott.
Some would say George Harrison suffered this fate, too. I think he was overshadowed by Lennon/Macca for many fans until "All Things Must Pass" and "Bangladesh". Any others come to mind?