These created by Mystique are specifically designed to give your interior design a better look like those in vanilla, while still giving you some tweaks that aren't obvious to the naked eye. There are several different types of mods that help you re-decorate your skim like in vanilla but without changing the base game's exterior textures. But this doesn't mean you should not take care of your interiors as well.
Vanilla or exterior texture for Fallout 4 is the most boring as most of the interior design are pretty dull. Softonic review Quality Optimized Vanilla Textures For Better Interior Design on the PC