Gumshoos
Normal
Abilities: Stakeout / Strong Jaw / Adaptability
HP: 88
Atk: 110
Def: 60
SpAtk: 55
SpDef: 60
Spe: 45
So this thing immediately stuck out to me for since FakeSpeed coming of of 110 Attack and Adaptability is pretty strong, which mediates for its low speed. It also gets pretty good coverage moves In Earthquake and Crunch to deal with Steel and Ghost types respectively. Stakeout is another cool ability which could be used on a Choice Band set imo as it punishes switchins really hard. It also gets Pursuit which I think gets the Stakeout boosts before the mon switches out which is also really cool. Another good FakeSpeeder which is nice, although Gen 7 seems to punish priority users atm.
Bewear
Normal/Fighting
Abilities: Fluffy / Klutz / Unnerve
HP: 120
Atk: 125
Def: 80
SpAtk: 55
SpDef: 60
Spe: 60
Another Normal type that seems that would be good in STABmons, Bewear could be useful as a pseudo-Mega Lopunny (with of course no Scrappy, which means that its worse), but I still feel it could carve itself a niche with an SD set with High Jump Kick, Espeed, Brutal Swing (a 60 BP Dark move) to hit Ghost types. Could see it work as a pretty good bulky setup sweeper especially since Fluffy weakens contact moves (got to watch out for that Fire Weakness tho...).
Vikavolt
Bug/Electric
Abilities: Levitate
HP: 77
Atk: 70
Def: 90
SpA: 145
SpD: 75
Spe: 45
Ah I was really hyping up a Quiver Dance set for this thing, but that abysmal speed though :( Anyways 145 SpA is still phenomenal with good 77/90/75 bulk. I mean I could still see a QD set working but you will need a lot boosts before outspeeding anything frankly. Its movepool isnt that amazing also as all it gets for coverage is Energy Ball really. Levitate is cool as well, giving it more switchin opportunities and avoiding Spikes. I also think a Specs set could work for this thing as well.
Crabominable
Fighting/Ice
Abilities: Hyper Cutter / Iron Fist / Anger Point
HP: 97
Atk: 132
Def: 77
SpA: 62
SpD: 67
Spe: 43
Man this typing is so cool and a love the design of this mon too. It could run moves such as Drain Punch and the new Ice Hammer (100 BP Physical Ice move that lowers Speed), being able to run a nice Bulk Up set thanks to boosted Drain Punches recovering HP to its high 97 HP stat. It also gets pretty good coverage in Earthquake and Stone Edge which is also nice. The low speed does suck, but its still relatively bulky enough to compensate for this.
Oricorio (all Formes)
Fire-Psychic-Ghost-Electric/Flying
Abilities: Dancer
HP: 70
Atk:70
Def: 70
Atk: 98
Sp.Def: 70
Spe: 93
This thing has pretty supbar stats, but the real thing that intrigues me is that it gets al Fire, Psychic, Ghost, Electric, and Flying type moves which is insane. It kind of still annoys me that it does not get access to Quiver Dance even though it is not a Bug type, it still is supposed to encompass everything about Dancing and such. Although, I could still see probably the Electric or Ghost Form run nice AoA sets with the amazing coverage this thing has now.
Silvally
*Normal (could change to any type with the appropriate item)
Abilities: RKS System
HP: 95
Atk: 95
Def: 95
SpA: 95
SpD: 95
Spe: 95
Ok so this thing is Oricorio on steroids lol. It has access to all the moves in the game practically with the according item, which means this thing could run a variety of sets especially thanks to its great all around 95 stat spread. Depending if this thing works like Arceus, it could be all types outside of battle, in which that case it could learn every move in the game. This would be amazing as it would become incredibly difficult to scout due to the multitude of options it can pertain. If it only changes in battle, this would still be good as it could run specific sets according to the exact type, which makes it more predictable, but nonetheless still versatile at the same time. Could easily see this thing be a top threat that could be placed on pratically any team really. Its regular movepool isn't as extensive as Arceus, but still this thing will be good imo.
Time for the broken shit:
UB-02 Beauty AKA Pheromosa
Bug/Fighting
Abilities: Beast Boost
HP: 71
Atk:137
Def: 37/
Sp.Atk: 137
SpD: 37
Spe: 151
The epitome of a glass cannon, Pheromosa seems to be an incredible wallbreaker. Bug/Fighting is amazing offensively as it has access to stuff liek High Jump Kick and Megahorn, while also beign able to go Special and run Quiver Dance set with Bug Buzz and Aura Sphere. Yes it dies to any priority, but still this mon will be incredibly hard to stop especially since Leech Life now is 80 BP and heals half HP and Beast Boost is like Moxie but raises the mons most prominent stat.
Xurkitree
Electric
Abilities: Beast Boost
HP: 83
Atk: 89
Def: 71
Sp.Atk: 173
SpD: 71
Spe: 83
This thing also has pretty supbar stats until you look at that godly 173 Sp.Atk stat dear lord. I feel with proper support, this thing will wreck absolute havoc on the meta especially since it also has access to Tail Glow because lol. Its coverage is pretty supbar with it only getting Energy Ball really (which is enough for neutral spread iirc). Also if you could make Beast Boost somehow boost speed instead of Sp.Atk, I have no doubt that this mon will be amazing.
Kartana
Grass/Steel
Abilities: Beast Boost
HP: 59
Atk: 181
Def: 131
SpA: 59
SpD: 31
Spe: 109
Probably going to be the best Shift Gear user in SuMo lol. 181 Atk is the highest attack for a non-mega in the game (higher than Mega Rayquaza by one point lol), and it also pertains an amazing Grass/Steel typing. It also cannot be stopped by FakeSpeed due to it possessing a high 131 Defense stat as well. I feel this thing will probably be broken lol, not much else to say.
Guzzlord
Dark/Dragon
Abilties: Beast Boost
HP: 223
Atk: 101
Def: 53
SpA: 97
SpD: 53
Spe: 43
This thing also really interested me as it pertains Blissey level HP and nice Dark/Dragon offensive typing. It has access to Dragon Dance and Heavy Slam (which I assume will do a lot just by looking at its size), which mean I could see this thing potentially be a setup sweeper ironically. The low defenses are really mitigated by the HP stat and it has all the necessary coverage moves to be good, so I can definitely see it working out as one.