I was making a tier list of album covers recently, that is, how nice does the cover look, how well does it hit the aesthetic of the album, etc. With disregard for how good the music is, though they do correlate. This was my top 10:
10 mewithoutYou / Untitled (Christian metal/rock)
9 Kashiwa Daisuke / 5 Dec (??
??
??)
8 Ne Obliviscaris / Portal of I (metallllllllyo)
7 Brand New / The Devil and God are Raging Inside me (basic rock)
6 Scale the Summit / In a World of Fear (instrumental metal, greatest outlier, the album sucks)
5 piana / Muse (dream pop?)
4 Kayo Dot / Plastic House on Base of Sky (uncategorizable bc it's Kayo Dot)
3 Kashiwa Daisuke / Re:RED (techno-ish remix-ish album)
2 TatshMusicCircle / エインヘリャルの蝶と異世界幻術姫 (anime techno)
piana / raula (dream pop? #2)
I once looked up where #4 was from and there's an artist who makes stuff that all looks kind of like this, so it's kind of a coincidence, but I still feel like it works.