The Pink Floyd documentary magazine I recently read talks about the conflict between Roger Waters and the rest of the band, especially Gilmour. It claims that “the Wall” was written mostly or entirely by Waters, and “The Final Cut” was entirely Waters’ creation.
My contribution is Ayreon, whose music is written by Arjen Lucassen, who also plays most of the instruments himself.
I’m slightly hazy on this but I think Pinetop Seven’s first few albums were written by band creator Darren Richards.