To help keep track of the anime you've seen (and to help us out as well, so we aren't giving you something you've seen) it'd be nice if you created an anime list at either: Myanimelist.net, anilist.co, kitsu, or anime-planet. All 4 sites are free and useful to have.

Some anime have more than 1 season, just so you know:

Banana Fish

Vinland Saga

Death Parade

Haikyuu

Chihayafuru

Toradora

Assassination Classroom

My Hero Academia

Cowboy Bebop

Fullmetal Alchemist Brotherhood

Hunter x Hunter 2011

Psycho-Pass

Senki Zesshou Symphogear

Natsume Yuujinchou

Heartcatch Precure

K-On

Seirei no Moribito

Shirobako

Shoujo Kakumei Utena

Princess Tutu

Steins; Gate