This is a superb essay. I'm in agreement with much of your analysis, especially what you say about the finite nature of the human mind and how that is explored in gothic fiction. In the past, I've talked about gothic literature featuring both outer and inner labyrinths - the setting, which you highlight, and the inner turmoil of the protagonist.

If you're interested, here's what I wrote on the subject (this is a link to my website).

My Principles for Writing Gothic Mysteries | Simon Dillon Books

I enjoyed the Nosferatu remake, by the way (here in the UK, it's a 2025 release as it came out on New Year's Day). :)