English pronouns still have three, but yeah, the vast majority of nouns have simplified to two. Latin has six, and I have encountered some consideration of locative as a seventh, but I think the consensus is six. But I remember
Opeth Nevermore Morbid Angel, Death Immortal Nile Emperor Sepultura, Children Of Bodom Mastodon Dissection Judas Priest Katatonia, Iron Maiden Bathory Dimmu Borgir Gojira, Cannibal Corpse Ulver, Immolation Metallica, Enslaved Arcturus King Diamond/Mercyful Fate