Super Dark Plasma theme is a transparent plasma theme to match both of the super dark color schemes.
They can be found here:
https://www.opendesktop.org/p/1303442

There is some nice GTk theme to match this here:
https://www.gnome-look.org/p/1303449

Icons are the Newaita icons found here:
https://store.kde.org/p/1243493

More screenshots are here:
https://github.com/freefreeno/Super-Dark-and-Super-Darker-Color-Scheme-GTK-Theme-and-Plasma-Theme