If you loved Berserk: The Golden Age Arc II - The Battle for Doldrey, try Black Butler: Book of the Atlantic
A bridge between a film you've already seen and one most people haven't. Black Butler: Book of the Atlantic has roughly 4.4× fewer votes than Berserk: The Golden Age Arc II - The Battle for Doldrey — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Berserk: The Golden Age Arc II - The Battle for Doldrey

Black Butler: Book of the Atlantic
What they share
Theyboth carry the foreign gem mood tag, and they sit in Action / Animation / Fantasy territory. If that's the register that drew you to Berserk: The Golden Age Arc II - The Battle for Doldrey, the second film will land in a comparable space — through a different lens.
What Black Butler: Book of the Atlantic is
Mid-Atlantic. Steam whistle. Empty deck chairs. A clandestine society promises resurrection; Ciel investigates, alongside his butler, Sebastian. Ciel's fiancée, Elizabeth, also boards the luxury liner. A theatrical horror anime, spiked with shonen tropes.