[dijit27]

I've been looking at the screenshots you've posted and I'm struggling to see what influence you're seeing in Big Sur that came from Gnome 3.

The best I've come up with is the switch from a two row title bar/header to a one that is integrated into just one row. Which could very well be inspired by Gnome 3 or parallel evolution.

Are there other UI elements that I should be seeing in Big Sur that look like they have inspiration, homage, blatant copying that I'm not seeing here?

To my eye they have a somewhat similar aesthetic but and general layout but their differences are many when looking closer.