These are all of the 1 season anime that I've given a 90/100 or higher on AniList:
- Akiba Maid War
- Deca-Dence
- Girls Band Cry
- Granbelm
- Katanagatari
- Kill La Kill
- One Outs
- Outlaw Star
- Princess Nine
- The Magical Revolution of the Reincarnated Princess and the Genius Young Lady
- Train to the End of the World
- Trigun (if you count the Stampede reboot as a separate entity)
And if you're willing to allow "1 season plus a movie" or "1 season plus some shorts" series:
- Cowboy Bebop (has a movie)
- Lycoris Recoil (has some short specials that aired afterwards)
- No Game No Life (has a movie)
- Puella Magi Madoka Magica (has a movie and a 2nd coming soon)
- Revue Starlight (has a movie and some chibi shorts that are more tied to the now dead mobile game than the original anime)
The fact that most of these are original anime rather than manga/LN adaptations is pretty telling. Adaptations just aren't as fun for me as a good original.