This song is a throwback, it's like Crayon Pop's "Saturday Night" and LMFAO's "Party Rock" it's similar in vibe to those kind of songs of the earlier 2010's, which in turn is based on disco, and they did it well here, it's a great throwback to that dance style, and I thought it was really really good.
One new group I'm surprised you haven't checked out yet is Lightsum, who released their second song "Vivace" a few weeks ago. They certainly seem to be one of the bigger girl groups that debuted this year.
