Three of my cats came through the cat flap and lived with me.
They used to live next door, they had six cats but four of them were regular visitors to my house probably because it was quieter. Next door used to have really loud arguments all the time. Anyway they split up, moved out and sold the place, and within a couple of months I had three of them living me. I ran into her in the town and told her where the cats were but she never came and got them. Oh and the two females were heavily pregnant when they moved in so after a couple of days I had six kittens as well. Five cats and six kittens is officially called a chaos.
Some are very different to each other, Arch and Debian where the former is at the bleeding edge of software and the later is the most conservative distro out there. Some are very similar, Ubuntu and Kubuntu where they are the same distro with a different desktop environment and default software.
Not entirely, for example, Discover is only good for flatpaks in EndeavourOS.