A while ago I came across the band Takamachi Walk, fell instantly in love with their music, and through them found other bands such as the aforementioned Ariabl'eyeS, Asriel, Elfensjón as well as Imy, Denkare etc.

Since a thing they all share is that all their album covers are anime-style illustrations I was wondering if these bands are some specific kind of genre and, if so, what it's called.

Also, if anyone has any additional band recommendations I'd love to hear them :)