Ubuntu MATE
Used by 2 peopleubuntu-mate.org ↗

“My main development machine runs Ubuntu MATE.”
Andreas Kling Interview, Creator of SerenityOS · via Uses This 
“I'm running Ubuntu MATE on it, but I'm keeping a few other OS' on SD cards in a paper envelope sellotaped into the casing, just in case.”
Viviane Schwarz Interview, Writer, illustrator, creator · via Uses This