I've seen a lot of anime that has literally been under looked or underappreciated by social media but more importantly anime fans as a whole because were usually blinded by the likes of Dragonball Z or one piece or bleach or attack on Titans but not really getting the chance to watch anime that are not even in that circle that have been under looked.
Here is my list for example:
#10: Urusei Yatsura
#9: Jing The Bandit King
#8: Great Teacher Onizuka
#7: Tomorrow's Joe
#6: Fist of the North Star
#5: Outbreak Company
#4: Ranma 1/2
#2: The Getbackers
#1: (this was a hard one)
Ixion Saga DT
now what is your top 10 most underrated and amazed that you have watched but nobody knows about?
Indeed GTO is really good and no one ever talks about it.
It's probably because of the fact that the teachers nowadays an anime are either busty or completely unmemorable.
Oh I'm not sure about putting them in order but here's 10 anime I feel like don't get recognition or are forgotten:
-Ghost Stories (it's known because of the dub and people think it's bad because the dub voice actors said so but it's actually really good considering it's for children)
-Initial D (don't worry you don't need to like cars)
-El Cazador de la Bruja
-Trigun (this gets on almost every top10 best 90s anime lists, but I still don't see anyone talking about it)
-Fist of the North Star (despite the thousand millions of OMAE WA MOU SHINDEIRU memes)
-Records of Lodoss War
-Great Teacher Onizuka
-Fullmetal Alchemist (very underappreciated!!!)
Monster and trigun is another
Monster is one anime I want to see done in a live action TV show. It's one that could actually convert over. Every once in a while you hear rumors about it.
Hell even one of the newer animes that me and my cousin watch that was known as 91 days was really good and very well done but sadly is underrated.
Prolly baka no test.that anime is funny as hell
Penguin Drum is a weird as hell anime that deserves some love (or at least some attention!)