Flea is my all time fav but I admit I don't have his chops. Great riffs and tone IMO.
McCartney, The Ox and Jonesy were all big influences on my playing as well as Tommy Shannon (SRV), Dusty Hill (ZZ) and several other blues dudes.
Claypool, Chris Squire and Geddy Lee are all awesome.
Hats off to 'em all.