Hello, all. Now that it's been a while since CT has been released, and after the recent Players Cup tournament, I feel the VR could use some updates. Here are my thoughts on some of the mons, and why I feel they should be higher/lower on the rankings.
VR
Metagross: S --> A
Metagross, while strong in early format, has declined in usage as the format progressed and different archetypes were formed. It is no longer as 'meta-defining' as Glastrier/Urshifu-SS/Tapu Fini etc, and is something that has multiple counter plays. While Clear Body with WP is still strong, it currently struggles to face off against the rising popularity of SunRoom, Spectrier, Coalossal, Heatran and G-Moltres, which is why I feel Metagross is no longer 'S Tier'.
Tyranitar: A --> B/C
Once strong during the Dynamax formats, it is a shell of it's former shelf. Sand is struggling to find a place in the format, and is no longer the great threat it once was. Besides the Sand Stream, it is almost always outclassed by Regirock who has greater physical bulk, similar coverage and a better ability in a format where Intimidate is rampant.
Venusaur-Gmax: B --> A
I feel G-Max Venusaur has been the closest thing to being 'broken' in the format, and that hasn't changed in Crown Tundra either. Having a Turn 1 with around six possible viable plays, being able to transform from a Sleep-inducer to a nuke button with residual damage while outspeeding the entire format, it deserves atleast an A rank. G-Max Venusaur is one of those mons you absolutely have to consider when building a team. The only reason I'm not ranking it as 'S Tier' is the specific team requirements to run it efficiently, in the form of Torkoal/Ninetales or Porygon2.
Urshifu-S: A --> S
A splash-able Pokemon that can hit through Protect with guaranteed Critical Hits. Dark + Fighting coverage, and has decent physical bulk. This monster can annihilate non-max Pokemon (And deal some huge of damage to Max Mons as well) with it's sheer unblockable offensive pressure while ignoring any buffs/de-buffs thanks to Wicked Blow. Dark is a good offensive typing as well. Considering how common it is, and it's ability to sweep late game scenarios, I feel it deserves to be S Tier.
Coalossal-Gmax: C --> B/A
Being able to win two major tournaments in a row is no small task. G-Max Coalossal has proven it isn't merely some one shot gimmick. It is really consistent, and can get the job done. (As long as you don't just Max T1, which is a mistake many players make when piloting the team). The only downside to running Coalossal is; you need some Aqua Jet or some fast Surf user. Support Dragapult and Urshifu-RS is the go-to choice, and the core requires a Rillaboom to better handle bulky Water-types which may hinder Coal's performance, which is the only reason why I'm hesitant to give it a definite A ranking. It should atleast be a B Tier though, considering how consistent the strategy is, and how powerful G-Max Coal is with it's great coverage options and residual damage.
Spectrier: C --> A
Once underrated due to it's lack of a decent special movepool, Spectrier has proven to be a tremendous offensive mon due to it's insanely high SpA stat, and access to Nasty Plot. The recent spike in the ghost horse's popularity, and how it's managing to consistently top online events (Even placing 3rd in Players Cup 2), shows this mon should never be underestimated. Besides being a nuke button, it can interestingly run a support set as well. The Ghost-typing helps a lot to bypass Fake Out, and it gets access to Snarl, Taunt, Will-o-Wisp etc. If you are not prepared, this horse can gallop through your entire team in a few turns.
That's all for now!