Currently all the Linux options for creating new droplets are based on systemd. Ubuntu, fedora, debian, coreos, or centos. Some of the older versions aren't running systemd, but it would be nice if there was a distro in the mix that had a strong stance against systemd. There's a request to support devuan, but that's a little alpha at the moment. Something a bit more stable would be nice, with a strong guarantee that systemd and associated garbage won't get pulled into the base server image ever.