As title says. Obviously I could setup different virtual machines or spend the time and install all the DEs in one VM if it is even possible without breaking the OS. I'm wondering if there is an already made iso or something that installs all the maintained DEs for trying.
It would be best to try every single one separately, otherwise you'll have dozens of programs that do the exact same thing, like file explorers.
That said, with Fedora you can list available desktop environments using the default package manager, dnf. In a terminal use the dnf group list command to list all available desktop environments:
dnf group list --available *desktop
Install the required desktop environment using the dnf install command. Ensure to prefix with the @ sign, for example:
dnf install @kde-desktop-environment
After trying the DE, you can remove it with:
dnf remove @kde-desktop-environment
Thought fully switching a desktop environment up to your login screen and all is a little more complicated and can end up bricking your system if you don't know what your doing. For those cases, you also would need to swap the system identity. Not entirely sure what was the command right...