Just going through some Pokemon here, and I thought I'd drop some suggestions for other changes.
I think Dusk Lycanroc could get a second typing, only because the other two forms did. Either Ground like Midday, or something else like maybe Rock/Normal, given the movepool it has.
That sounds like a nerf rather than a buff; gaining normal STAB isn't worth a 4x weakness to fighting.
Lurantis could easily be Grass/Bug with some additional moves available to it, like Leech Life, as well as X-Scizzor and Fury Cutter, which it already has.
Lurantis' gimmick is that it's an orchid mantis in reverse (so it's a plant pretending to be a bug). Adding bug typing to it would ruin that.
Comfey could be Grass/Fairy, since it even gets more Grass type moves than Fairy in its learnset, plus it fits the design. Same goes for Florges.
Yeah, there are plenty of Grass/Fairy types already though, and their flowers aren't actually part of them, which is probably why they aren't grass types in the base game.
Goodra could be Dragon/Water because of the multitude of water moves it learns, plus its availability revolves around water.
This one fits and I have considered it, but I thought Dragon/Poison also fitted and couldn't decide between the two 😅. Mono Dragon also has a couple of nice resistances which it would lose if it became part water. Dragon/Water is probably still an upgrade though!
The three Gen 5 monkeys all feel like they could have a secondary Normal typing. Not sure why I think that, just feel like it works.
Mm, Normal typing can be slapped on anything that's based on an animal. As they were meant to be paired with starter Pokemon I think their pure elemental typing is fine as is though.
Excardrill needs Iron Head as a level up move, as its only has Metal Claw as its one Level-up move since Gen 5.
Excadrill is very strong as is, and the Iron Head tutor is available at a reasonable point in the game. That said, I'd be willing to give it Smart Strike by level up instead, seeing as the TM for that was replaced.
Cryagonal could get the Ghost/Ice typing, just based off its design really, as well as some moveset changes, such as Shadow Ball.
It does look vaguely ghostly, but it's just a living snowflake, not a possessed snowflake/angry snow spirit etc. so I'm not sure I agree with this one.
Yanmega as Bug/Dragon purely for the design and the species its based on, as well as being a generally requested typing for it. Plus, Bug/Dragon would be a great unique typing
That one I'm never going to do no matter how many times it's requested; Yanmega isn't a dragon, it's a flying insect. Sure it's based on a dragonfly, but dragonflies aren't even called dragonflies in a lot of languages, and there's no mention of dragons in anything related to Yanmega itself.
Sunny Cherrim could be Grass/Fire to get more use out of Sunny Day, with the Downcast form staying as it is.
It could be, but it doesn't look like a fire type. I did give it a Fire move in EXWY, but that was removed in this hack as I felt that it made no sense.
Absol has Play Rough through level up, so I think its Mega evolution should be Dark/Fairy. Its design definitely gives off that vibe
A lot of other Pokemon get Play Rough by level up too, it's a widely distributed move now. I kinda agree with its design looking like it could be part Fairy, but I can't quite say why, which is why I've left it as is.
Torkal could be Fire/Rock, given the design. I'm surprised its not already one in the base game honestly.
Yeah, I think that typing hurts more than it helps though!
Ursaring could be given some attention as the precursor to Beawear, with some additional Fighting moves and changed to Normal/Fighting
It's the only bear Pokemon other than Snorlax that isn't part Fighting at this point, I'd like to leave it that way for some variety.
Bug/Psychic Butterfree makes sense for it, and I think it would be a welcome change from all the other Bug/Flying in the game.
It would be a unique typing, but I'd still take STAB Compoundeyes Hurricane over STAB Psychic. Would absolutely consider that typing in a hack without Hurricane in it though!
Thats all that really comes to mind. Excluding slapping Fairy type onto all "pixie" looking Pokemon such as Minccino and Delcatty, or Normal/Fighting Ambipom. I hope this isn't too much, and I more just wanted to see what you're thoughts were on some of these suggestions.