Sure
1.

I use this mon too much. It's honestly really,
really good at whatever the fuck you want it to do. It really isn't close to my personal favorites but by builder and in-game usage it's probably in the top 3 and I think it will always make a team better by having it.
You can run Lum. You can run Band. You can run special with a physical coverage move like Knock Off. You can run Assault Vest. You can run Band with Sludge Wave because why the fuck not. Being a part of innovating Landorus has been quite fun, and I hope to see it in SV so it can be explored even more. I seriously recommend giving this mon a try if you haven't yet, the matchups it can get are ridiculous due to its movepool, bulk, and ungodly Attack stat.
2.

Broken incarnate. Just use it for more than 10 battles and you'll understand. Charm/Counter/Soft/Stoss solves the metagame minus a handful of sets and mons you can't really beat. Always feels good to click because you know you're going to have very good odds to win vs a lot of teams.
As a bonus, you can 3-0 the obnoxious fraun sample with good gameplay.
3.

My opinion on Naganadel has always been constantly shifting, but I think now I can safely say I've decided that it's a good mon. What's most piqued my interest about it is how reliable Life Orb is. Versus other dragons, the most amount of setguessing you have to do is whether they are scarf or not, and you shouldn't really lose to fairies. My personal preferred set is Draco/Sludge Wave/Flamethrower/Protect for the most consistency.
I think Naga is in an okay spot right now, it doesn't appreciate both of the top mons being an okay answer to it but it's not at the mercy of the cores built around those mons, and not every team is going to have band Zera and scarf Toge anyway.
4.

Fell off but obviously still good lol. Don't use LO DD. This guy still beats 60% of steel types and Avalugg for no discernible reason with minimal commitment. AV is solid for cheesing stuff and reliability vs, ironically, other AV users. Haban beats every single dragon type bar Haxorus which not a single person uses anyway. Custap is that good cheese and I love it because the opponent always has to respect the possibility even if it's not evident on preview. Band is the rarest usable set I think but it's still absolutely insane it forces something as ridiculously bulky as Celesteela to EV for it instead of the other way around.
I dunno. Regidrago rewards genuinely skillful play between setguessing and choosing the right move vs stuff like CounterCoat Swampert.
5.

The ORIGINAL lottery machine. Casinos were so inspired by watching Togekiss gameplay that they decided to create slot machines to mimic its Air Slash RNG fishing.
Anyway, Togekiss isn't solely carried by flinch odds, otherwise it would be pretty bad tbh. Obviously there's more to it, and it's the fact that it can run every viable item under the sun and EV for whatever the hell it wants. True Togekiss counters really are few and far between, and I've gone on about this in my VR nomination post. With such a silly ability, solid typing, very good bulk and crazy flexibility, I think Togekiss still has more to it than has been currently developed, and while I'm not particularly excited to fight new Togekiss sets, I am excited for this thing to eventually become suspect worthy.
Oh, and I love using this mon because it can either fill holes or be part of a core. Flinching several times in a row is pretty fun too. Not too deep.
6

Well-defined matchups is such a rarity in this tier, and I think Urshifu having an obvious matchup spread works in its favor; it loses to fairies, and beats most else. My favorite set to use is probably bulky Chople, since it tanks a lot of attacks and then hits back with Wicked Blow, or just bulks up in your face and refuses to die.
Wicked Blow is just such a fun move.
7.

It really is as simple as having broken typing + Hydro Cannon to complement broken typing. Beats a lot in theory with Encore and Calm Mind and Moonblast. I think Sitrus is the best set because it catches everyone off guard and turns 2hkos into 3hkos, which matters a lot since you can CM > Blast > Cannon.
8.

I know this mon is bad, and cheesable as fuck, and really really lackluster, but Specs can actually beat things, and it's kinda reliable vs a fair amount of threats. Yeah that's really it though it's just on this list because of Choice Specs.
9:

Everything is 3-0d by Spectrier. This is below Zone because of Wisp accuracy, but otherwise this mon feels incredibly good to use because it defeats everything upon Wisp landing.
Weird to build with though.
10:

Does not die barring Fighting coverage, super bulky, super strong, Sand giving it an effective AV (such that AV gives it an effective TWO AVs) is a little ridiculous LOL. A dark type that genuinely beats fairies most of the time is hilarious and I do not use this mon that much at all, but it's fun to use because of both its comedy value and reliability when not clicking a rock move.
no honorable mentions