If they are willing and able to learn something with a radically different interface: Fedora.

If they aren’t: Linux Mint. There is nothing easier for a former windows user than Mint and it has a ton of built in tools for any kind of user. Not to mention forums support and massive package repos (+ built in flatpak).

Every update this app gets closer to the style and functionality of Apollo, and every update I am more pleased. Keep up the good work!