Hi,
You can always tell the amount/ability to judge a good player when the majority of them are from the top ten class of music fame/sales, and so few of them are actual bass players.
Missing in here and not represented, would be the likes of Eberhard Weber, David Darling, Charlie Haden, Mike Howlett, Dave Pegg (Fairport Convention) ... and so many others in Spain, Italy, Germany and France, alone ... that would put the rock'n'rollers to shame!
Oh well ... as usual, the most talented and knowledgable players remain hidden! But Gene Simmons as a good bass player before Bapu ... right!!!!! You got to be joking!