@ametonym do you mean: sexy? Or simply stuff that isn't as sad?
A couple of the new unreleased solos definitely go in that direction ("Railway" by Bang Chan, "Hallucination" by I.N). But neither of those are available on any streaming platforms yet.
Some others that may fit the bill:
Chk Chk Boom (Deadeye Ver.)
Super Bowl
Heyday (by 3racha)
Venom
Freeze
Insomnia
Connected (by Bang Chan)
Drive (by Bang Chan & Lee Know)
Wow (by Lee Know, Hyunjin & Felix)
I'm assuming you already know a lot of the better-known skz tracks and you're looking for less well-known tracks. But just in case, here are a few more skz tracks that are more grunty or dancey than sweet or sad:
Mountains
JJAM
I Like It
Megaverse
Comflex
Item
Topline
Get Lit
Chill
Domino
Cheese
Thunderous
Back Door
God's Menu
Easy
TA
Double Knot
Booster
MIROH
Side Effects
Beware
Yayaya