Yeah... a few more come to mind. Trying to pick someone who I can listen to hundreds of times without getting tired of it. Now that's a hard trick.
Neil Young has put out dozens of albums, many of which I have. All of them are terrific in one way or another. Great, great talent.
Traffic, especially on John Barleycorn Must Die, is timeless. I can listen to those competing flutes and extended jams over and over.
Carlos Santana was my favorite when I was 12 and he was a family favorite when my kids were 12 (and now 16 and 13). From Woodstock to his recent collaboration albums with today's artists, Carlos has been consistently excellent.
Roxy Music captured an avant-garde, urban sound that I loved in the states. It was pure urban Europe on a rainy night. When I joined the Navy and found myself on urban European streets at night, I recognized the place having listened to Roxy. (PS - On that note and back to Knopfler, Dire Straits' "Down to the Waterline" so fully captured the essence of being a sailor trolling the port town bars that it still sends chills up my spine.) Viva! Roxy Music is perhaps one of the top two or three live albums of all time.
OK, that was four, but hey, it's my site!