I’m using PopOS Cosmic alpha (not based on Gnome) on my new laptop and like it a lot so far. It has a few rough edges, but nothing I’d switch to something else over. (In fact, I did use the Gnome version of Cosmic until my previous laptop broke.)
I’m not sure if that exact image is an original, but there is one remarkably similar found in Froissart’s Chronicles from the early 1470s: https://discardingimages.tumblr.com/post/58267835214/the-lute-player-and-the-harpist-froissarts
Search for “medieval marginalia” and you’ll find all kinds of similar weird stuff: https://www.ebaumsworld.com/pictures/the-most-bizarre-things-ever-to-be-found-hidden-in-medieval-art/84859940/?image=84859961 https://designyoutrust.com/2021/12/a-collection-of-medieval-marginalia-that-have-been-turned-into-memes/
There is also the painting “The Garden of Earthly Delights” by Hieronymus Bosch, which is entirely deranged: https://en.wikipedia.org/wiki/The_Garden_of_Earthly_Delights
I saw this website that is trying to help evaluate projects to see if they live up to their claims of being free / open source: https://isitreallyfoss.com/