I use KDE. Some use GNOME. Most other options are probably to be left out as X11 is unsafe.
Cosmic is not nearly finished, but will probably be a bit safer, as its in rust, even though not tested.
Then there are window managers like Sway, Hyprland, waymonad, wayfire, etc.
RaspberryPi also has their own Wayland Desktop.
Is every Wayland Desktop / WM equally safe, what are other variables here like language, features, control over permissions, etc?
I don’t think the DE itself matters, but I can recommend using an immutable OS (makes it harder to install malware) and installing flatpak apps only. You can also use software like flatseal to further lock down permissions
I’m starting to think people misunderstand what an “immutable” distro really does…
Please do share with me what I do not understand.
A mostly read only filesystem built from a limited number of packages, with other files being in a fixed number of locations mean it is harder for malware to hide.