UFC 170 was light on relevance other than the title fight and the co-main event winner establishing himself as a light heavyweight. As a result, there wasn't much action in the official UFC fighter rankings other than at 205 and heavyweight. I will give the rankers some credit though - while Cormier isn't completely out of the HW rankings yet, he did plummet to the bottom right away. Baby steps!
You can check out the full rankings here, and use the dropdown menu to see the individual picks of the four BE contributors (myself, T.P. Grant, Fraser Coffeen, and Stephie Daniels).
I'll stick with breaking it down division-by-division.
Heavyweight - Cormier dropped nine spots to 13 now that he's out of the division, and will hopefully fall off the list in the next couple of updates. Moving up one spot are the following - Antonio Silva (4), Josh Barnett (5), Alistair Overeem (6), Stipe Miocic (7), Mark Hunt (8), Roy Nelson (9), and Frank Mir (10). Antonio Rodrigo Nogueira moved up two spots to 11, passing Gabriel Gonzaga.
Light Heavyweight - Cormier enters the list at number 6, dropping the following by one spot - Mauricio Rua (7), Dan Henderson (8), Chael Sonnen (9), Ryan Bader (10), and Jimi Manuwa (11). Gegard Mousasi dropped two spots to 13, with James Te Huna and Rafael Cavalcante dropping to 14 and 15 respectively.