Nope
The Keith Moon rumor was officially denied by the Henson company. They're just a compendium of musician types.
The only band member based off of a particular musical personality was Dr. Teeth, who was based off of and named after the blues musician Dr. John. The rest of the band (except Animal) have name roots in the music world. Floyd's full name is Sgt. Floyd Pepper, and his namesake and clothing are derived from the Beatles' album Sgt. Pepper's Lonely Hearts Club Band; the Floyd part, it has been speculated, may have come from Pink Floyd. Janice was named after Janis Joplin but not specifically based off of her; she was meant to have sort of a Mick Jagger/Janis Joplin mouth. Zoot was named after jazz musician Zoot Sims; there used to be a site, electricmayhem.net, that said who Zoot was meant to look like. There were a few people, one was Chuck Mangione but I can't remember the rest.
Hope that helps!
David "Gorgon Heap" Ebersole