I watch all sorts of urbex and abandoned exploration videos. The Proper People are great.
Rust to running videos about restoration of old cars and heavy machinery. vice Grip Garage is great, that guys a hoot.
Lately I've been into the guy's channel who bought the old Cerro Gordo mine and had been doing cool videos where he explores the old mines like 900 feet underground.
I've been into Heavy D Sparks rescue and recovery videos too.
If you asked me a few years ago, I would have not even said I'm interested in any of these, but with the flood of useless "creator" content, I think they're pretty interesting.