Yukika and Kim Areum both make city pop music.
Some other songs:
CLC - Where Are You
CLC - I Should Be So Lucky
CLC - What Planet Are You From
Yubin - Lady
Dreamcatcher - Alldaylong
fromis_9 - 0g
Haseul - Plastic Candy
Yesung - Like Us
BoA - Sweet Impact -The Greatest Ver-