Kingdom of Knuffel

Still to this day Yuri on Ice. Period.

Difficult question to answer.
New anime is constantly being made, it's an evolving artform.
If I where to think of that question in terms of what anime do I re-watch the most, it would be Porco Rosso.

Violet Evergarden, Carole & Tuesday, Fruits Basket, Spirited Away and A Silent Voice.