OK gonna fire off some noms, both going up and going down :D
Going Down
Raikou A- to B/B+: Still a cool mon, but togekiss was a big reason it was A- in the first place. Sub CM is still very threatening, and specs hurts, but not a dominating force in the meta right now.
Swampert A+ to A-: He was an awesome tini switch in even with energy ball being a thing since he was immune to the coverage that usually shrekt bulky waters. He still walls Mega Aero to hell and back, and has rocks and roar along with just being a good general tank, so i think A- is fine.
Alomomola: A- to B+: It's still cool, just not as cool. it fits with Aromatisse because i think its similar how aromatisse was mainly used for heracross, who left ad aromatisse ended up in B+, this is very similar with victini getting the boot.
Going Up
Jirachi:
A+ to S: it lost victini, who hurt it in teambuilding and on the battlefield, since stacking psychics is usually a no go. Scarf Rachi is better without tini, and sub toxic still fucks over walls, while CM is good for a surprise sweeper. S rank for sure, has like 6 sets and all areviable, the epitome of versatility.
I've wanted the next two for a longgg time
Mahmudkipz
Mega Aerodactyl: A+ to S: Ok so I've fought for this before, and that was kinda just me being a kek, but now i see legitimate reason for this. He checks Lucario incredibly well, only losing to bullet punch SD. Luke is undoubtedly number one threat in the tier with the loss of tini imo. Point Number 2, bulky waters are falling and we will see a drop in alomomola and swampert usage which is good for our rocky fren. Point 3, grass types are on the up who mega aero does well vs most specsmin and coming in on sleep vs rose. He beats chesnaught, offensive rose, and sub seed min which is awesome. Finally he still has the bajillion coverage moves and support utility to be fit on every single playstyle except full stall which is still kinda dead, semi stall is king of defensive rn. It also has great matchup vs froslass, since icy wind cant 2hko and ice beam means dead lass with no spikes, and you live one iirc. King of versatility bar like rachi, (who is S rn)
Mega Ampharos A+ to S: Ik it lost tini and toge to check, but it just deserves it. It fits on any kinda team except full offense, has a godly slow volt switch, smacks every ground in the tier except SpD Hippo for over 50% with dragon pulse, and can run bulky resttalk sets to be the #1 answer to honchkrow among other things, and it just grabs so much momentum every time in enters the field. It's also hella hard to one shot it. But both the aforementioned too do so well vs the tiers top threats atm. Please kitten fren, see my appeal. Slow volt switches amazing, it just checks everything.
Darmanitan B to B+/A-: No it's not Victini, but it somewhat fills the void. It was never bad, just why use it over victini, so now it has relevance again.
Lucario S to God Tier: Imo
broken rn, it lost one of its best checks, it has coverage for like everything on it SD set, with earthqwuake, bullet punch, iron tail, and ice punch. Also Nasty Ploy wrecks too, so yeah. God of UU atm.