A redditor has ripped apart the new changes and added his own gym rankings that looks more accurate than most lists!
A redditor by the name of QuantumOverlord has created some amazing gym defender rankings for you all to see. If you would like to read the original reddit post then please click here, I will also share them below!
As you can see below on QuantumOverlord‘s nice list, it lists Lapras,Snorlax as top defenders while 3/4 would be Lapras/Snorlax with a different move set. These rankings actually make sense when you consider the different move sets and types being listed.
QuantumOverlord Introduction to GYM Defender List.
Please read through the FAQ at the end, I have addressed questions I have had from previous versions
There are many gym defender rankings, but very few take type into account, which makes the rankings misleading overemphasising stats above other factors. These gym defender rankings are based on simulations of defender pokemon against attackers weighted by the most likely common attackers. These attackers are determined, in part, by community surveys on silph road and other places. More information below the results. Please note these results are not arbitrary or based on my subjective viewpoint, but are based on actual simulations of gym battles.