Also

https://minimal.gallery/

(I learned about this here on HN If I recall correctly)

Yup, discussed here 5 months ago:

https://news.ycombinator.com/item?id=35225097

Thanks! As a developer, these are the kind of sites that I want to develop for myself.

What happened with the "above the fold" rule, that we put important info where the user don't need to scroll. I clicked through some of them and I only see huge titles with parallax.

Also: https://admiretheweb.com

What makes them unique?

I just happen to like their curated aesthetic, and with respect to OC, the designs also seem reasonable to implement and use.