WhiteSur Gtk Theme is a macOS Big Sur like theme for Gnome-based desktops, supporting Gnome Shell, Cinnamon, Xfce, Pantheon, Budgie and Mate desktops.
The theme pack comes in both light and dark variants, both having regular (with the sidebar slightly transparent in some applications) and solid versions.
You’ll also find a macOS Big Sur like icon theme, Plank dock theme and wallpaper.