Oh, we postin' our Pokémon?
My first 8 were
-Tyrunt
-Simisage
-Luxio
-Celebi
-Beldum
-Clawitzer
-Alolan Golem
-Mimikyu
So... Nothing special really. Mimikyu and (somehow) Clawitzer carried the whole team, basically. And Eviolite/Sturdy Tyrunt was actually very helpful to drop them Stealth Rocks, though eventually I stopped using it.
I bought three Pokémon then and... they sucked: Cosmog, Cubone and Purrloin, this last one was somewhat useful, tho, using it with Fake Out, then Prankster Thunder Wave, then U-Turn, holding a Focus Sash.
After my first three losses I got Venusaur who I obviously used with its Mega Stone and actually came in pretty handy with Leech Seed + Sleep Powder.
Then was the Chests thing that gave me an Alolan Muk I didn't use and after losing other 3 times I got a Crabominable that became my (very bad) Dynamax Pokémon for a while.
After other 3 losses I purchased two Pokémon more (Braixen, Illumise, Hitmonchan) from which I didn't use any.
Now my so far terrible luck took a sudden turn just at the end of the event. I lost for the 15th time and got a Solgaleo from it that totally replaced Crabominable from Dynamax, and on the final day I did my last purchases and one of them was Corviknight that got me most of my victories at the end of the event.
tl;dr my luck is ass, but I still had fun with this.
Final Pokémon I got:
Final Team: Celebi, Clawitzer, Corviknight, Venusaur, Mimikyu, Solgaleo