Unfortunately there aren't a lot of mature anime which are recent, because the trends in anime seem to be skewing towards isekai that caters to otaku and shonen.

- Spirited Away

- Grave of the Fireflies

- Ghost in the Shell Stand Alone Complex

- Psycho Pass (first season only)

- Tatami Galaxy

- Perfect Blue

- Paranoia Agent

- Serial Experiments Lain

- Eden of the East