i'm not a musician but my favorite is Les Claypool... n my answer might be biased cause i've seen him in concert a bunch of times
McCartney Jaco Entwistle JPJ Cetera and a bunch of funk and jazz bassists who's name I don't know.. Lots of session guys like Jamerson, etc.
My favourite bassist from the old Punk/New Wave British scene is Jean -Jacques Burnell from the Stranglers .
Excuse, I'm just a guitarist, but my favorite bass player are, not in a particulate order of preference . John Entwistle ( The Who) Stu Hamm ( Joe Satriani, Steve Vai) Billy Sheehan ( Mr.Big, DLR ) Les Claypool Primus ) Getty Lee ( Rush ) Paul McCartney ( Beatles, Wings) Chris Squier ( Yes) Rudy Sarzo (Ozzy, White Snake, ,Quiet Riot ) Bob Daisley ( Uriah Heep , Ozzy ) Jaco Victor Wootan Dennis Dunaway ( Alice Cooper ) Dick Peterson ( Blue Cheer ) John Paul Jones (Led Zeppelin) Jack Bruce ( Cream ) Geezer Butler ( Black Sabbath)