I see Biwott and Kipchoge definitely top 3. Other than that it's tough. Kipsang may be past his prime and Kimetto is really a question mark at this point. Bekele... Who knows
This is probably right, but I'm rooting for:
Hey, can we list what we know of their personality traits?
Kipsang: Generous spirit (gives back to community), thoughtful and good-natured, opposite of resting bitch face --frequently found smiling; perfunctory with the sponsorship tweets (also saw him drop the Berlin/BMW race flag they kept trying to drape over him for the Kenyan flag, rightfully so):
Kimetto: More reserved and shy? Maybe just because he has less of a fluency in English? Seems to take better selfies and is well hydrated for now:
Bekele: said to be shy but extremely nice and generous. Probably creeped out by overzealous guys taking videos of him running in English parks.
Kipchoge: runs with his heart and mind as well as his legs! ??anything else?