
A+ to A — It’s just not taking up a big enough piece of the pie chart among Ground types to warrant A+.
Landorus-T is flimsy into Zamazenta, Excadrill, Rillaboom, and other staple or trendy physical attackers while being exploited by the combinations of pivots and Kyurem or Ogeron-Wellspring, which is some archetype’s bread-and-butter. This isn’t to mention Iron Treads is still practical, Ting Lu is as good as ever, and other Ground types like utility Garchomp on BO or Excadrill on Sand continue to eat into Landorus-T’s possible uses. I do not think much fundamentally changed about Landorus-T and we even see more people using Choice Scarf variants, but it feels way more A than A+.

A- to A — Just clearly a tier too low right now. Hatterene is approaching staple status as a top tier hazard control Pokemon.
Hatterene is more common in tournaments and practical on various archetypes than other A- Pokemon. RH Pain Split utility Hatterene changed the game while other variants like AV or CM, especially with Terrain, hold their own and Eject on weather is still timelessly viable. I think Hatterene is a top 15-20 Pokemon right now, so if A and up consists of the top 25 Pokemon (although imo it should be closer to 22), then Hatterene should comfortably have a seat at the table.

B to A- or A — Rillaboom has just seen a lot more usage and become a much more practical option since early August.
Grassy Terrain is the big one here, supporting a ton of Pokemon while giving Rillaboom revenge killing powers. SD sets with Tera Blast or LO Knock/HH can be cool, but the utility is what makes Rillaboom way better than your average B rank Pokemon. Think the body of work recently speaks for itself from there.

B to B+ or A-
Just feels like Latios went from fringe or niche to being at least somewhat respected and used. Obviously this is not the biggest shift, but there’s enough to distinguish it from currently mediocre company.
I think Choice Scarf Latios is really good into offense while we have finally begun to see it used more. It’s not the best Pokemon and still has some things it is walled by/has to Trick into, but there’s merit there. In addition, non-choiced variants prove disruptive for balance while still being hard for offense to swap into — they just have way more opportunities to outrun it then. I would describe Latios as limited, but plenty viable.

B to B+ or A- &

B to B+ or A- — Sand is just a lot more common than it was before. Just think reflecting that it’s important.
I don’t think it’s the best archetype or the most consistent, but it disrupts certain offenses and VR should reflect it being more relevant than a few months back. Tyranitar has utility sets and more breaker focused variants like Choice Band, which we are seeing a decent amount of. Drill is pretty much the same old SD STABs with Spin or the infrequent use of Tera Blast and Leftovers or Air Balloon.

B to B+

B- to B+

B- to B
Three lower ranked Pokemon that have made splashes recently. Ogerpon seen more on balance and BO as a tempo controller with options to break while Moltres-G starred on HO across OLT and Blaziken functioned as a speed boosting nuke cleaner/trader on a few offenses. None define the metagame, but all deserve a bump up.
Maybe

A+ to S-? Not sure you can say it’s THAT MUCH less viable than Ogerpon-Wellspring or Great Tusk to the point that you would rather group it with Gliscor, Dragapult, etc…I need to think this one through probably,
Zamazenta / Dragonite / Ting Lu / Kingambit (can argue Lu or Gambit S-)
Wellspring / Tusk / maybe Kyurem
maybe Kyurem / Gliscor / Deoxys-Speed / Darkrai / Dragapult / maybe Iron Valiant / argument for a few current A Pokemon to rise up
Honestly looking at this roughly, the difference between where I see Kyurem and where I see the A+ Pokemon is kinda bigger than I would like it, but I still have it below the other S- Pokemon, so it’s probably up to preference from there.