"Session legends"...if you just said a Fender bass, that would pretty much be true, but Joe Osborn really skews the curve with his massive output on that Jazz bass. Still, as has been pointed out, he never changed his flats and only used the neck p/u, so if we are talking about a "sound" he is practically a P-bass player. 
What was Lee Sklar known for? We also have Chuck Rainey, Bob Glaub, and has Duck Dunn been mentioned? Ray Pohlman isn't as well known as Carol Kaye, but he was also a Wrecking Crew bassist with a ton of credits and was another P-bass player.
What was Lee Sklar known for? We also have Chuck Rainey, Bob Glaub, and has Duck Dunn been mentioned? Ray Pohlman isn't as well known as Carol Kaye, but he was also a Wrecking Crew bassist with a ton of credits and was another P-bass player.