I know this is a bit adjacent, but I always come across this sort of movie when I encounter another small genre of films, which is the documentary-style sci-fi. Following in the vein of Orson Wells’ War of the Worlds’ “News report” these are sci-fi presented as non-fiction. The one I witnessed in real-time was Without Warning but have since discovered Alternative 3 and Special Bulletin
It’s a fascinating genre as television used to be much more trusted, like radio before it, and the internet has I think gone through the same transformation. And it’s fascinating that each of these productions thought “No way people will think it’s real…”
Anyway, kind of fun to watch (kind of)
[0] Without Warning https://m.youtube.com/watch?v=6J4pfT2qLb4
[1] Alternative 3 https://m.youtube.com/watch?v=7YHrCAQ1Dlg
[2] Special Bulletin https://m.youtube.com/watch?v=cDZQsVNZ3SE