To celebrate the first anniversary since its launch in South Korea, spotify Korea has announced the streaming trends among listeners over the past year. Here is the whole article including the most streamed songs, female artists and male artists, among other rankings.
The most streamed k-acts on Spotify Korea (from February 1st 2021 - February 1st 2022) are:
BTS (BTS)
IU (IU)
TWICE
Yerin Baek
AKMU
(I excluded all international artists so if you want to check the whole list click on the link)
The top acts kinda make sense since based on popularity rankings and charts, it's always these same acts topping everything. Good for Yerin, Taeyeon and IU being the only solos there!