Really depends on your tastes.
Love/romcom: Kaguya-Sama: Love Is war or Rascal Does Not Dream of a Bunny Girl Senpai (Trust me it's good, just ignore the name)
Action: Hunter x Hunter or Attack on Titan
Cooking: Shokugeki no Souma
Detective/Mystery: Bungo Stray Dogs
Obligatory Jojo Plug: Jojo's...