[1] https://www.gnome-look.org/p/1372444 ?
I'm feeling very comfortable with it in GTK2/3 and QT4/5 apps.
Fits perfectly with the built-in theme metal2 from IceWM.
Use this with a filemanager like
[2] https://gitlab.com/antix-contribs/zzzfm
for an optional desktop, and give a shit about what Gnome does.