Something that needs to be said, and something that I had to learn myself, is that the views on a music video put out by a group does not determine whether or not that group is underrated.
For example, if we went based off of views, NU’EST wouldn’t be considered underrated because their MV “Face” has 56,862,227 views. Sales and wins is what determines how popular a group is.

It is why people still talk about Monsta X being underrated despite that they have 26,652,516 views on their MV for “Hero.” A group can have a really popular music video/song and still be underrated.