Nope... No documents, no videos, and the only photos are the ones in the photo app. I, too, have a NAS (three as a matter of fact), which stores ALL my files. I am a photographer, and my photo collection is well over 500K these days, mostly RAW files from a 50-megapixel camera.
My Daisydisk scan looks like this:
View attachment 2573253
The Users space is obviously the largest, and contains a 225GB Parallels file, 123GBs in my Photos Library, 80GBs in Lightroom files (they can't be stored off Mac), and a whooping 145GB in the Library...
Everyóne has different use cases, and mine is not that unique.