Players like Casady, Entwhistle, Bruce and Mccartney have to be credited with pushing the bass esp. in the rock world because there was not much before them to go on and you can be sure they were listening to Jamerson (even though they might not have known his name as he was not credited on the Motown etc. recordings in those days). And yeah there are a lot under the radar like George Porter (Meters) and others who are giants of the instrument like Robbie Shakespeare, Aston Barrett, Jah Wobble, T Bone Wolk, Bill Laswell. Then we have to remember Scott La Faro and Blanton on the double bass when no one hardly knew basses existed.