The result of any fight is unpredictable and especially in real fights anything can happen.
But if it would be a tournament... (I can only guess how it would look like, it´s just speculation):
Bruce Lee - amazing speed, great P4P power, quite well rounded, JKD: devastating, because fingerstitches, groin kicks and other vicious things... Lee had unmatched knowledge at his time.
Michael Jai White - great power, speed and amazing explosiveness. A damn skilled martial artist.
Dolph Lundgren - former world class karate fighter, huge and strong
Scott Adkins - skilled and quite experienced, especially dangerous striker
JCVD - former european kickboxing champion, great flexibility; but not as tough as others of your list
Steven Seagal - high ranked Aikido master, big, strong and explosive
Donnie Yen - fast, skilled martial artist and very good actor!
Tony Jaa - Muay Thai fighter, amazing athleticism, speed, devastating kicks and ellbows!
Chuck Norris - six time karate champion; great kicks... but I think he´s overrated
Jet Li - very fast, so much more than an actor, very tough and dangerous martial arts expert
Jackie Chan - fast, experienced martial artist, but even as a fighter in his movies he´s more the comedian
1. Bruce Lee
2. Michael Jai White
3. Dolph Lundgren
4. Jet Li
5. Tony Jaa
6. Scott Adkins
7. Steven Seagal
8. Chuck Norris
10. Jackie Chan
11. Donnie Yen
Excuse my english, I´m german