So the Cinderhulk was released and sweet lord did it make an impact. I've been trying out as many tank junglers as possible and even some of the defensive oriented bruisers to gauge the impact the item has had. The item traded early game efficiency for damaging power and the item pushes the late game of tanks to come out earlier and as such was a buff to mid-late game tanks. It doesn't help the early game woes of any champion but that is a moot point when a proper leash can boost the jungler, a few jungle monsters were nerfed and, if your opponent plays a tank too, you are less likely to be invaded.
I personally feel the item was a boost to all tanks in the game but a much bigger boost to the tanks who were already good and/or had a monstrous late game. A few tank junglers still need a bit of a boost and many others are either moderate or strong but outdone hard by the uber tanks at the moment. Still though, as with every other time I've made a list, this is my opinion and it can change when more information is learned or when the inevitable changes to the champions are introduced.
I also have to mention that just because tanks have been reintroduced into the game does not exactly mean that diversity has been gained. We are in a transition point at the moment when the last batch of must-pick junglers are making their way out (through nerfs or otherwise) and we might just start seeing nothing but the same tanks be played once it becomes widespread either through solo queue or because LCS players start spamming them. I don't think we can ever truly expect competitive diversity in champion picks but hopefully we can gain some strategic role diversity such as picking between an assassin or a tank for a different type of team composition.