[Narishma]

Can you give an example of such a theme?

[kitsunesoba]

There’s a number of themes that cut down padding (just take a look at the GTK Themes section of gnome-look) but two where it’s more obvious are the Nordic and Mcata themes:

https://www.gnome-look.org/p/1267246/

https://www.gnome-look.org/p/1381832/