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.
P4P - Cain Velasquez drops from a tie for third spot with Renan Barao into fourth on his own.
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.
Middleweight - Yoel Romero's back in at the 15 spot.
Welterweight - Mike Pyle moved up two spots to 13, while Josh Koscheck dropped two to 15.
Lightweight - Michael Johnson and Rustam Khabilov flip-flopped the 13 and 14 spots again.
Featherweight - Erik Koch dropped three spots to 15 now that he has moved up to lightweight. Conor McGregor, Dennis Bermudez, and Tatsuya Kawajiri moved up one spot to 12, 13, and 14 respectively.
Bantamweight - Iuri Alcantara moved up one spot from 10 to 9, bumping Dominick Cruz down. Bryan Caraway and Ivan Menjivar also flip-flopped the 14 and 15 spots.
Flyweight - Dustin Ortiz moved up one spot to 12, bumping Scott Jorgensen to 13. I'm surprised that Zach Makovsky didn't move up any further.
Women's Bantamweight - On the strength of her UFC 170 win, Alexis Davis passed Miesha Tate for the number two spot. Sarah Kaufman also passed Jessica Eye for the number five spot.