Statistics from YouTube has shown which K-Pop artists had garnered the most views in 2018.

In terms of total views, the following artists reached the highest numbers, from Rank 1 to 5: BTS, Black Pink, TWICE, Momoland, and EXO. You can check out the rest of the artist ranks and their respective view counts below:

Furthermore, the following chart reflects the changes from the year 2017 to 2018, in terms of the different ranks and view count rise rates:

In addition, the following charts show in which countries the videos of BTS, Black Pink, TWICE, and EXO were viewed the most:

And, the following charts shows the difference between 2017 and 2018 in 16 different countries:

Only the views from music-related videos (MVs, dance practice, performance, lyric videos) have been counted for these charts.

(Source)