I assume you are defining "era" = "far back as you can remember independently taking a personal interest in the team to present time"
1. Mitch - pretty much started it all for me...was an awesome pro too
2. Martin - Huge softspot for him because he came to KSU when there when it completely defied any logic or reason.
3. Beaz - Best player in KSU history
4. Henson - Robin to Mitch's Batman
5. Massey - Fun to watch. Euro youtubes have boosted stock
6. Walker -

7. Hatcher - Last top flight guard in a K-State uniform (Clemente?

)
8. Davis - Workhorse
9. Hoskins - Perimeter player with a post game, not a post player with a perimeter game.

10. Coleman - Probably underated here, but I was barely aware at the time.
My memories of Nealy and Ro are much more based in watching them as pros. I was too young to really pay attention when they played in college. Zero memory of Evans or Williams.