Not at all surprised by the top two. If Myung had been more notable post-Octavarium he probably would make my top 25 but I just don't have the same admiration for him I might've had in 10-15 years ago.
My full 25:
1. Geddy Lee
2. Brian Cook - Russian Circles, Sumac, These Arms Are Snakes, Botch
3. Mike Watt - Minutemen, fIREHOSE, mssv
4. Simon Gallup - The Cure
5. Paul McCartney
6. Juan Alderete - The Mars Volta, Big Sir, Halo Orbit
7. Tony Levin
8. Justin Chancellor
9. Tina Weymouth - Talking Heads, Tom Tom Club
10. Les Claypool
11. Thundercat
12. Colin Greenwood
13. Jaco Pastorius
14. John Paul Jones
15. Chris Squire
16. Chris Wolstenholme
17. Dan Briggs
18. Tim LeFebvre - Bowie's Blackstar, Donny McCaslin, New Age Doom
19. Steve DiGiorgio
20. Bakithi Kumalo - Paul Simon
21. Al Cisneros - OM, Sleep
22. Cliff Burton
23. John Deacon
24. Bootsy
25. KT Chang -Elephant Gym
I'll shout out Elephant Gym, Minutemen, Paul Simon's Graceland, New Age Doom on KEXP (YouTube), These Arms Are Snakes, Talking Heads' Remain in Light, OM's Advaitic Songs, and Thundercat's It Is What It Is since those folks from my list got no votes and some forumers may dig them.