How does this involve Linux?

For my main workstation and main laptop:

• Cosmic themed GNOME - I just like the way it looks and works without any changes. The basic tiling functions are something I find helpful at times too.
• Plasma 6 - It works pretty well and looks nice. I don’t do a lot of customization, so it’s not a big deal to me. For my other machines I’m currently using Cinnamon, GNOME, Budgie, and LXDE.

https://blissos.org/ is another one I just remembered as well.

https://www.android-x86.org/

It still works for installing the OS though, at least in the case of Nix. I’ve not tried Guix so far, but I’ve installed NixOS on two machines in the past year using Ventoy.

Check out Ventoy! Unless you need a single ISO on the drive, it’s just something you install to it and then copy and paste ISOs to the folder on it. No flashing needed, it runs them for you. I’ve got 128GB drives almost filled with every ISO I could possibly want.