I found a very good looking and modern icon theme, actively maintained and seemingly complete in the applications it covers. I’d like to suggest adding it to the official repositories if possible. They’re included in the Manjaro repos so other Linux distros are taking this icon set into account.
https://github.com/vinceliuice/Tela-icon-theme
https://opendesktop.org/p/1279924
I used the Papirus icons previously. Tela seems to be even more fitting for a clean and modern icon set. It would be nice to have it as an installable package by default.