Tier 1
&Dragonite [Dragon Breath/Dragon Claw; Dragon Tail/Outrage]
Remark: A genuine generalist ready to take down anything. DB/DC allows highly efficient dodging while DT/O offers monstrous damage output.
&Tyranitar [Bite/Stone Edge; Bite/Crunch]
Remark: Another highly reliable generalist, with the powerful STAB Bite and high flexibility. Hard counter to Snorlax and Blissey (expect for Dazzling Gleam one).
&Machamp [Counter/Dynamic Punch; Counter/Close Combat in Tier 1.5]
Remark: With the rise of normal tanks (the FPB and Snorlax) in the gym, a strong fighting type is favored. C/DP Machamp takes down those normal tanks the quickest, saving you a lot of time. You need to dodge well though. Also, Machamp is the super counter to Tyranitar, which is expected to appear in gyms as Dragonite do now.
&Snorlax [Lick/Body Slam; Lick/Hyper Beam]
Remark: With Body Slam buffed and Lick EPS remained, Snorlax remains in Tier 1.