Matcha-gtk-theme VS plata-theme

I use one of the Matcha themes with a few modifications and the Qogir icons.

Your other option is to find a theme that has a slimmer look, that way you don't have to change the font size or anything else and let the theme take care of the padding. This theme comes to mind, although I haven't personally used it in a while. There's also Linux Mint's official theme Mint-Y, it might be in Pop!_OS's repositories (sudo apt install mint-themes) but there was a recent update that made the themes look much better, I'm unsure if this new update is already in the repos.

Matcha as well.

I use Matcha on just about every system. https://github.com/vinceliuice/Matcha-gtk-theme

You can find plata here, i dont no if plata-noir or compact are part of that package. btw, it looks like plata hasn’t been updated for two years, maybe consider another more recent theme.

I think we might have a misunderstanding on our hands here. The problem is not that the Plata package for Solus is no longer maintained, but that the Plata project itself (which is/was independent from Solus) sees no more development. So stepping up would mean to take care and update the Plata theme itself, with all that entails. There have been at least two efforts to revive it, but I think both are on hold at the moment. To help out, or start your own continuation of Plata, you'd need to fork the upstream Plata project and update the GTK theme to be compatible with new versions of GNOME shell, Budgies, etc.

Theme is Plata-Noir and Papirus Icon theme, which are default for Solus Budgie.

I'd recommend plata. It has a material style design with very good contrast on both light and dark themes. It also has a compact variant. It is the default theme of solus.

I use plata-theme for GTK, it can be configured by 4 key colors, then it derives everything else from those key colors, I use the same colors for Sway, Wofi, Mako, Waybar .. etc. The result of the overall system looks very consistent.