MF DOOM - check out Mm.. Food and Madvillainy, then branch out from there imo
Noname - she doesn't have that much stuff, but she's one of my favourites
Earl Sweatshirt - go in order of release imo - Earl, Doris, I don't like shit, Some rap songs. his early stuff is super raw and it's all great
Tribe Called Quest - my favourite is Low End Theory but you honestly can't go wrong with them. People's Instinctive Travels, Midnight Marauders, and We Got it from Here are awesome
Guru's Jazzmatazz series is another solid one
I also highly recommend early Kanye - Through the Wire, College Dropout, Late Registration (my personal fav of his and probably in my top 5 hip hop albums ever), and Graduation
Aye. Real Talk, this. I forgot to mention Earl earlier.
Also I'd like to throw in Life of Pablo. That was one of my favorite Album's from Ye. ---