I'll exclude known and big series and i'll make a list made of less known animes I really like and from my perspectivity are worth watching or at least checking
Chanbara being works set in the Samurai period or a fantasy equivalent.
Shounen, Fantasy, Action, Swords, Guns, Feudal Japan all of this sort,
top 10 of those ive ever seen
The (few) anime with endings that don't leave ya hanging
Anime with plots or characters that moved me to tears, whether it be happy or sad tears. Sometimes when someone dies, it makes me cry, other times the emotions portrayed by the character makes you also feel their emotions.