If you loved Suzume, try Children Who Chase Lost Voices
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Makoto Shinkai, and they both carry the bittersweet, foreign gem, tender mood tags, and they sit in Adventure / Animation / Fantasy territory. If that's the register that drew you to Suzume, the second film will land in a comparable space — through a different lens.
What Children Who Chase Lost Voices is
Here's a film doing its level best to evoke Studio Ghibli. A lonely young girl, Asuna, follows a strange tune from her crystal radio into a hidden world. There, Asuna discovers not only the mythical land of Agartha but the pains of both love and loss. It's pretty and a decent homage, if nothing else.

