Well, her top two are Carano and Marloes. Both fought lighter than 145, and really Carano should never have fought at 145, she was just too lazy to diet. Admittedly, I did like the results at weigh-in.
Hell, Shayna Baszler is one of Cyborg's best wins, if that tells you anything about her strength of schedule. She is the best of the worst. Hell, the 145 division is so bad that the top ten at 145 have a lower winning percentage when fighting women at 135 than when fighting the larger women at 145. The division has always had shit for talent.