Submitting the following sample teams:
UU Fairy:
https://pokepast.es/ff8c9db2c6dfbe2e
We run hazard stack fairy with double steels (Tink + Keys) for hazards. Fairy is the only type that can viably run a double steel defensive core, and as people are unlikely to prep for steels in UU we should take advantage of this. Mimikyu is a good spinblocker, Azu doubles as a sweeper and breaker and our main answer to steels, and Scarf A9 is Fairy's best speed control option (all the other fast faries are banned). Fez acts as a specially defensive Tspikes absorber that also pressures most bulky mons with beat up Poison Touch, and getting walled by steels is not that big of a problem since most good steels are banned.
Got Plat in the core challenge, finishing at a decent 81 GXE.
Replays:
https://replay.pokemonshowdown.com/gen9monotype-2668422784-4hivs78py85xjr6h6hv80aea6st918xpw?p2 vs Fire
https://replay.pokemonshowdown.com/gen9monotype-2668014011-8tw54ocdio56fm3qlvt0gwunfwhk2xvpw?p2 vs Rock, note how unplayable the mu looks for rock
https://replay.pokemonshowdown.com/gen9monotype-2667390834-2g7o2d7uurc1etfl6qr9iykm539bi0npw?p2 vs scovillan Fire
https://replay.pokemonshowdown.com/gen9monotype-2668443149-gajlq2jr9nw89stvlsdbb3s3oyde5wrpw Fairy mirror
https://replay.pokemonshowdown.com/gen9monotype-2666849103-d0f6o3b5o0bfngmpwnfuudpgfg15jnwpw vs steel
https://replay.pokemonshowdown.com/gen9monotype-2666453627-2djrui7ggxgharuioxqvcams4oa425dpw vs bug
UU Poison:
https://pokepast.es/8369ca0add989a6b
Team's made around glowking + amoonguss core, overqwil as an immunity and glimmora for hazard removal that doesn't remove our Spikes from overqwil. We round it out with Haunter as a trickscarfer, spinblocker, and Ground immune, as well as BU Dogi for a potent win condition.
Replays:
https://replay.pokemonshowdown.com/gen9monotype-2585896659?p2 vs ghost
https://replay.pokemonshowdown.com/gen9monotype-2576859690 vs dragon
https://replay.pokemonshowdown.com/gen9monotype-2586567013 Poison mirror match
https://replay.pokemonshowdown.com/gen9monotype-2573910997 vs Fire
