My 5 Ubers:
1. Zamazenta Crowned. No item Mon, so will collapse to hazards. Gambit check and physical Mons check in general, but loses to bulky teams.
2. Lugia. Horrendous base typing, Recover only has 8 PPs. It hardly will sweep and won't wall forever.
3. Giratina-A. Defogger that beats Gholdengo. Offensive sets should lose to Tera Fairy Garg. Typing gives a lot of weaknesses, though bulk compensates those and has better resistances than Lugia.
4. Archaludon. I disagreed with this Ban and still do. Provides a check to Waterpon and Gambit, increases Ground usage so that Raging Bolt and Gouging Fire kinda become worse too.
After these 4, everything else is so broken (some due to Tera Blast alone, but still), so I wouldn't test anything. Palafin or Watershifu would increase the number of broken Water Mons (each having different checks), we already have enough with Waterpon, Wake and the few Rain teams that remain after Archaludon departure, they would be extremely hard to handle and create the broken (Waterpon) checks broken situation. I disagreed with Sneasler Ban too, but nowadays it would saturate us with another big threat that is hard to RK. Iron Bundle is fun has Dewgong as check now, but creates the same Water centralization as Palafin or Watershifu, but to even greater degree. Darkshifu is just no, not another Dark type who you can't even Protect against to scout (though the meta does deal with frail and slow Hoopa). Zacian could probably be handled by Unaware Mons or even Volcarona if we drop that too (though I don't want Volca again), maybe even Galarian Weezing, but rest will stand no chance, it has perfect coverage and unlike Zamazenta a very good defensive typing. So, no more Mons have a solid case for me to be tested. Still, so since the question was about 5 banned things not 4, I will bring up a last one.
5. Last Respects. Yes, this has been banned to AG. However, I think there is enough counterplay compared to other Ubers:
-Dark types are everywhere. Most of them bulky enough to take one hit and hit back. Gambit is literally the best Mon in the meta and has Sucker Punch. Some Dark Mons can be Scarfers and outspeed both Houndstone and Basculegion, see Darkrai and Meowscarada. Lokix deserves a special mention due to having both Sucker Punch and Tinted Lens First Impression in case the Last Respects Mons Tera.
-Priority is also everywhere. I mentioned Gambit and Lokix, but Meowscarada gets Sucker Punch too. Cinderace can become a Dark type too. Tera Ghost Attack boosting Valiant has been appearing on ladder a lot. Raging Bolt can smash Basculegion and hit Houndstone hard too. Rillaboom has Grassy Glide for the fish. Grimmsmarl has a different type of priority, with Screens, TW and Parting Shot (also has Sucker Punch).
-Fast non Dark Scarfers, such as Pult can get the job done.
-Unless they run Boots (therefore hitting less hard), Sticky Web makes Last Respects Mons slow.
-Garganacl with Iron Defense. Won't stop Basculegion without Tera, but will stop Houndstone.
-Some Booster Energy users should be able to outspeed (Valiant, Boulder and Moon).
-Dragonite is a common Tera Normal Mon that should be able to withstand the assaults of Last Respects.
-Tera Dark Mons such as Tusk are a thing.
-Normal types exist in this meta. Pdef Blissey or Chansey should be able to take Body Press from Houndstone. Basculegion will break, but get a lot of recoil in the process. Ursaluna should also beat Houndstone one on one and with Tera, should kill Basculegion too. Maushold is very frail, but still prevents spamming the move. Indeedee is also frail, but is notable for not being weak to Fight and also enabling Hawlucha to outspeed (and maybe use Encore too) both Basculegion and Houndstone.
-Tera Normal something like Alomomola should be enough. Just one dedicated Tera slot for the situation, it's not that much commitment.
-Winning the weather Mon. For Last Respects to reach broken mode, at least 2 kills are needed. If one of those is the weather setter and you have another one alive + weather abusser, you won't lose to Last Respects.
-Using the same weather but with a faster abuser. Excadrill is faster than Houndstone and Barraskewda is faster than Basculegion, also having Crunch.
-Alola Raichu + Pincurchin is very niche, but a real answer. You can fit Hawlucha and Quark Drive Mons (hi, Boulder and Jugulis) there too.
-Avoid hazards (Hatterene, Cinderace, Tusk, etc.) and have some Focus Sash Mon.
Just to clarify, I don't want anything retested at the moment, at all, we should go in the Ban direction with Darkrai or preferably Waterpon. However, any of the 5 things I mentioned (including Last Respects) has a far better case to be tested than Palafin, Urshifu or Volcarona.