I'm a huge fan of art but I've never heard of this style. Sounds like a fun rabbit hole to go down though. Are there any others you'd recommend?
I really can't mention other works besides nana's, because they are the only ones I know that are that elaborate. After all, I know the term in a shallow manner, as I understand it, "finiharist" is a term that only exists in the spanish and portuguese languages, so you will find little using the term adapted to english, perhaps there is another term to refer to this in that language, but if so I don't know it.
I investigate further, I discovered that this word was first coined on the internet by users who consumed these weird and surreal short films. It makes sense, because many videos like this went viral in both portuguese and spanish lenguages.
The closest thing I can think of to a general term that encompasses these films is surrealism, but I don't think it's right since surrealism doesn't seek to produce discomfort, besides you are very adept at art and if you didn't mention it, it's probably because It is not like this.