S-Tier:
Fullmetal Alchemist: Brotherhood
Attack on Titan
Spirited Away
A-Tier:
Hunter x Hunter
My Hero Academia
Made in Abyss
B-Tier:
Fairy Tail
Magi: The Labyrinth of Magic
Demon Slayer
C-Tier:
No Game No Life
The Rising of the Shield Hero
Blue Exorcist
D-Tier:
Sword Art Online
SAO's first season was BOMB imo. However, each season there after didn't have quite the same spark.
Fairy Tale is another good one! I totally forgot about that one.