If you loved Snowden, try The Professor and the Madman
A bridge between a film you've already seen and one most people haven't. The Professor and the Madman has roughly 3.6× fewer votes than Snowden — 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.
What they share
Theyboth carry the cerebral mood tag, and they sit in Drama / History / Thriller territory. If that's the register that drew you to Snowden, the second film will land in a comparable space — through a different lens.
cerebral
What The Professor and the Madman is
Oxford, mid 19th century, a worn leather satchel overflowing with letters. A professor compiles words, a madman submits thousands of definitions from his asylum cell. Safinia tackles the unlikely friendship at the dictionary's core.

