I assume you mean that they don't make the list in spite of having great sound as well as great music? (If you mean great music regardless of sound, then the list would be practically endless). If the former, three that come to mind right away:
Wayne Shorter- "Atlantis"
Phoebe Snow- "Phoebe Snow"
Poncho Sanchez- "Bien Sabroso"
Bach- "Orchestral Suites" Marriner/St. Martin ITF-Decca
BTW, agree re Oregon; that one has always been a mystery to me too.