Hey, i want to share the ss stuff i used this season i'm not building crazy teams but i think some people can be interested:
Week 1 vs kythr :
https://pokepast.es/ee8749ef1f5c67a8

For the week 1 i take something i'm confident with: Sandless Ground, i build this type of team a lot before mpl.
Classic LO Nidoking, Scarf Krook with Outrage because i don't have Mamoswine in this team, Gastrodon spedef with the Float Stone ( Holder's weight is halved. ) with this item it survives two hits from major users of Grass Knot like Tapu Koko or Thundurus-T, Mixed Garchomp i'm not sure if i add the same spread in the game because i change it but very cool set he help vs a lot of match up and he work well during the game, Sub BU Lando EV's are for Amoonguss he was supposed to 6-0 Poison but that's harder now with the rise of Toxic Crobat, Utility Excadrill with SR and Spin you can probably drop SR for Sword Dance if you want but Spin is very usefull for few match up like Fairy.
Week 2 vs Skysolo :
https://pokepast.es/ebe895aa380f35d0

For the week 2 i want something strong against Fly and Dragon those two types had a lot of usage week 1 so I took ice to prevent spam and little stat i met 0 fly this tour so i think it was successful.
Classic Veil Ninetales, Sash Mamoswine, Dragon Dance Kyurem i love this set pp stall a lot of pokemon beat some of his check who think it's a special kyurem this Pokemon is just too strong he can sweep 90% of the type just look at this stat 660 BST that's crazy Melmetal have "only" 600 BST lol, prefer Cloyster as a Spin here because he have Tspikes for Kyurem and Scarf Darma Band Weavile for the end you can swap the item if you want or delete Darmanitan cause this pokemon is bad.
Week 3 vs dahli :
https://pokepast.es/9ee9f68dac3cc923

For the week 3 i want something good vs Steel Dragon and Fairy so i start around Scarf Jirachi with Play Rough for Dragon, Stallbreaker Mew with the Kasib Berry which allows me to Knock Off and Will-O-Wisp Dragapult and Aegislash, Slowbro with Flamethrower for steel, Classic Boots Victini Will-O-Wisp for Dnite and Landorus you can also spread few burn vs Poison, Classic cm Hatte and Specs Latios i want to test this set because Specs Dragon are always scary like Hydreigon, Kyurem or Dragapult are good examples Draco Meteor hits really hard and Trick is usefull in a lot of situation.
Week 5 vs Frol1 :
https://pokepast.es/703c6c618621a055

For this week i face someone i know quite well i know he want to play with some random build and won with something "funny" so i basically take the steel i used for the last suspect.
Heatran Scarf can lure a lot of pokemon if your opp doesn't check the item he can ko Tapu Koko with Eruption for example, Sub Melmetal, Corviknight better than other fly steel here because he can pp stall some random set, SD Excadrill with occa for the fire mu, Aegi spedef WP i don't think that's a good set but he save some run on the ladder Sneak is always cool here because Scarf Heatran stay slow and Jirachi Specs Thunder for the para that's cool for speed control and trying to para some random setup.
Week 6 vs Kaguya Lys :
https://pokepast.es/6441e5d14114dc99

I don't remember if my team was in good position for play off but i was expecting dark, dragon or fairy so i try to build a bug.
Bug have 1 usage this mpl kythr who link his team at the end of the game so i based my team on this team and a bug Fírnen made like 4 month ago.
Buzzwole good wall and win condition versus steel (EV from Fírnen), Araquanid stolen from Frnen too Water Absorb looks cool for the Rain without Toxapex i really dislike shuckle so i take this set for my sticky web setter, Volcarona QD Roost Psychic for the Poison MU, Scizor good versus the offensif type especially Ice and Fairy, Ribombee for Dragon and Vikavolt over Galvantula because i think i this guy is too frail and you need an elec for water and fly.
Week 7 vs Conflux :
https://pokepast.es/cf832cf2b11f0e64

Nothing to say here because my team was at 90% in Play Off, i just want to test some Decem set if you want the explanation for Zapdos and Moltres-Galar just looks at the post above. Corvi with Body Press for Dark, i put Outrage on my Scarf for Dragon, Dnite for fire elec and Dragon, Tornadus give a second defog and he help vs psy.
Semifinal vs TJ :
https://pokepast.es/b66f6f61435d5971

Not gonna lie this team wasn't build for TJ, i just try to build a Dragon with a decent mu against Ice and i test this team in seasonal versus Conflux and i won a game with it so i've decided to play with this team.
Scarf Duraludon for ice, classic Dragalge Gunk Shot for cm user, Specs Kyurem for the immediate power, Sub ID Kommo-o for Steel and Dark, Latias Soul Dew is a really good set Strong vs all the type without steel defog is needed in Dragon because if you don't have one you just lose on the hazards and Hex Dragapult because spreading burns is always a good idea Dragon Darts for Dragon Match Up.
TheArchitect_ vs. Sificon Week 4
https://pokepast.es/98a3889a57430280

Colbur Runegrigus for Bisharp, i build this team around the decidueye the set is from sm sample team you always have difficulty with Entry hazards and Ground move so i think decidueye is decent for that.
Cielau vs. Shiba Week 5
https://pokepast.es/8f4638ac95b64b36

A classic Dark Bulky Offense here nothing Crazy Relaxed Nature and 10IV speed Mandibuzz is for slowturn on Celesteela or Corviknight.
Floss vs. Shiba Week 6
https://pokepast.es/e7bae1059b13715c

That's a team i build before mpl and i want a ground with a good match up versus fairy so i play Spin Excadrill and Steelix as a Win Condition for Fairy and Dark this pokemon can come on Scarf Bulu which is nice too, i don't really like this version of mixed chomp prefer the one i play week 1 but Shiba play with this version and in last i want a scarf, i put Scarf Nidoking to lure some pokemon i think Scarf nido is easy to hide on this team with ebelt chomp or lando/exca.
roxiee vs. Shiba Semifinal
https://pokepast.es/0aafec25f29e047b

Screen Klefki with common setup Bulk Up Tapu Bulu for the Fairy Mirror.