I'll just play the devil's advocate and let people like my post for OU-based with a BST, and like Stocke for Ubers-based. This totally isn't a ploy for likes or anything, what are you talking about?
smh stealing my ideas :')
I'd prefer this to be
OU based, with a BST cap or something. I personally don't like Ubers metas as much (Arc, Pdon are a bit boring to me), and I like the idea of having these guys fight it out with other mons in OU. A BST cap would help with this because looking at OU currently, nothing has >600 BST other than megas and Kyurem, and in fact that is the baseline for OU generally.
Otherwise, I'd like to take a moment to think about BrokeMove1 and BrokeMove2, aka Espeed and Boomburst. I'll put the relevant offensive boosts in brackets (Atk or SpA, Spe). (I'm going to ignore stuff which can't donate).
Boombursters are: Swellow (+20/40, Scrappy), Noivern (52/68), Exploud (20/20, Scrappy),
Vibrava (5/60),
Flygon (20/30)
Best recipients are Porygon1 and Porygon2, by the looks of things. Porygon->Noivern has 110/100/115/
137/115/108 stats. Porygon2->Exploud has 105/100/110/125/125/80 with Scrappy Boomburst+Focus Blast.
Espeeders are: Arcanine (40/35, Intimidate/FF, good coverage), Dragonite (50/10, Multiscale, good coverage),
Dragonair (20/20), Lucario (40/40, Steel secondary, good coverage),
Togekiss (10/40, Hustle), Raichu (35/20), Pikachu (10/30), Linoone (40/40, Bellyspeed)
Good receivers are Munchlax, Teddiursa (both have native Belly Drum, and Teddi has CC+Crunch as well), Doduo, Porygon2 (funnily enough, but it's the best 'nite recipient). Munchlax->Arcanine gets 170/125/75/70/115/40, and perfect/near perfect 3 move coverage - Intimidate makes this
bulkier than Arceus, while hitting harder (and having BDrum). Plus, your speed tier means you're running Adamant + bulk. On the other hand you can run P2->Dnite with 115/130/120/135/125/70 and Multiscale.