If you're into Giriboy, then you might enjoy
Samuel Seo's style. Giriboy is even on one of his tracks, if I'm not mistaken..
I'd recommend his songs
"창문" and
"B L U E". :)
I discovered
SOMA a while ago. Her voice is freaking beautiful. Check out
"Pale Blue" if you're in the mood for some slow, dark R'n'B.
offonoff are great, too! They're part of the Eskimo Club crew with Dean while also being under Tablo's HIGHGRND label with Hyukoh and Punchnello.
My favorite tracks of them are
"blu" and
"mind".
If you're searching for more upbeat songs - or rather autotune for days and sparkling tracksuits - check out for
"Silky Bois" by
Goretexx,
Han Yo Han & Black Nut. Even though technically speaking it's a hip hop track, it has a smooth beat and incredible high notes, lol. The MV is just a must-see, especially wet Black Nut. ( ͡° ͜ʖ ͡°)
I don't want to start a huge spam but
ELO (AOMG) and
Heize are also definitively worth a mention.
Hope that could help. ;)