In life there are few certainties, and in MMA even fewer, but if I had to bet my life on any one fighter becoming champion, Kayla Harrison certainly feels like the safest bet.
There are a few fighters that I expect to win the belt pretty soon, and a whole bunch of fighters that I expect to win it at some point.
Within the next year or so:
Kayla Harrison
Shavkat Rakhmonov
Within the next few years:
Erin Blanchfield
Carlos Ulberg
Magomed Ankalaev
Ian Machado Garry
Sean Brady
Arman Tsarukyan
Movsar Evloev
Merab Dvalishvili
Umar Nurmagomedov
Steve Erceg
Tatsuro Taira
Should happen eventually:
Shamil Gaziev (if he fixes his cardio)
Bo Nickal (if he has chin and heart)
Khamzat Chimaev (if he fights)
Michael Morales
Sean Brady
Jaqueline Amorim
Probably Kayla Harrison is the only one I am close to certain about though.