Great Rock Bassists your Top 10.Rock not Jazz. But Hey what about Reggae

Phil Lesh.

+1 Jack Bruce

What-- no Jack Casady, Geddy Lee, Sting or John Paul Jones ?  ?  ? 

You said "Rock, not Jazz" but...

Jack Bruce was classically trained and most often described himself as a Jazz player. 

I've heard recordings of Jaco playing Jazz and Fusion but never Rock. . . would be curious to know what you are referring to...

I saw/heard Jack Bruce live twice, and his tone was, by far, the worst I’ve ever heard. And then there’s his playing; far too busy for my taste (my musician friends refer to his style of playing as "lead bass" ;-), but to each his own.

Now Jack Casady, that's a different story. He almost made it into my Top 10, and would definitely be in my Top 25.

My top 10.