Those aren’t all the DEs out there…

You could’ve included a table/matrix at the beginning with links to the corresponding commands, so I can for example see column “Arch” and row “Gnome 3.x” and click on that to be taken to the correct command.

You basically did a DE package rosetta, which is a nice idea :) Arch Wiki has something similar for pacman commands compared to other distributions’ package managers. And if I wanted to find a package’s name on another Linux distribution I’d search in pkgs.org which is another awesome resource. Maybe you can link those in your article?

Good article, nice work. (btw "How to install any of the most popular DE … would be more precise of a title perhaps ;)