There are many. I own a few that would be hard to classify as my favorite. One that is not well known is Stuff. That is the name of their first, I believe, album. They didn't make many. They were a conglomeration of excellent musicians like drummer Steve Gadd. I don't believe they toured as a band but they were one of the first groups to play music on the Saturday Night Live TV show many years ago as the house band. The album "Stuff" is purely instrumental. A real hidden gem.
