Scourge - Bisharp, Excadrill, and Glalie. All chosen based on their ability to use One Kit KO moves. (Guillotine for Bisharp, Horn Drill/Fissure for Excadrill, and Sheer Cold for Glalie). Most likely had Snorunt first.
Shadowsight - Absol and Duskull. I feel Shadowsight would lean more towards pokemon as companions. Absol would probably be his first partner pokemon with Duskull coming later perhaps followed him out of the Dark Forest who knows. I just think it's cute and he needed a ghost type. You know what Phantump could work too.
Squirrelflight - Infernape, Greedent, and Arcanine. I think Chimchar could keep up with her as a new trainer and I think she deserves a big buppy that could also cause so much damage. Greedent for obligatory Squirrel pokemon. Talonflame could go here too i think thats really piling up the fire types tho.
Flamepaw/Nightheart - Charmeleon, Umbreon. He was probably given Charmander as a starter by default (I would think Firestar was given a Charmander as well) and was frustated with it and neglected its training for a while hense still being a Charmeleon. Probably bonded with Eevee a bit more because of projecting the need to be what he WANTS to be onto Eevee idk how to word it. Gave Eevee the choice of what it wanted to be.
Snowtuft - Sneasle for sure. Honestly I can't imagine him having super strong pokemon he simplyyy does not strike me as a strong presence LMAO. Perhaps Alolan Sandslash too?
EDIT: Added Flamepaw/Nightheart
