FOS: Stands for "Free Operating System" as an inclusive term. Includes GNU/Linux, NonGNU/Linux, *BSD that are meant to liberate ones computing.
I'll start, I use Linux Mint on my laptop that I use for work daily. It uses the latest Xanmod linux kernel and flatpaks for apps with GNU Guix providing everything else.
Still on Ubuntu, but I'm going to jump soon. I would like something with a similar dock. I'm actually working on my own launcher/dock that I'll share when it's ready.