You're probably the only person I know who enjoyed "Art School Confidential"
IMO it was pretty much a mess and the whole murder mystery really ####s it up. Clowes's original story is quite good (reread it recently, actually) but pretty short so makes sense they'd need to add some padding but that was a pretty awful decision.
Have serious doubts about "Ghost World" creating legions of Skip James fans but IIRC it's what turned me into Skip who became my favorite bluesman so the film gets bonus points from me. But yeah, it's pretty great all around, as is "Paper Moon" so glad you finally got around to those 2.