These are some of my personal picks. I’d define longevity as how long you can preform at a high level dependent on your age and how much damage you’ve accumulated over your career, NOT just how old you are otherwise some would be higher than others.
1. Jon Jones
2. Jose Aldo
3. Jim Miller
4. Yoel Romero
5. Max Holloway
6. Andrei Arlovski
7. Frankie Edgar
8. Daniel Cormier
9. Glover Texeria
10. Jan Blachowicz
11. Stephen Thompson
12. RDA
13. Jared Cannonier
14. Michael Chandler
15. Matt Brown