After a little mini-campaign from the likes of the crew behind Dwarf Fortress and Deep Rock Galactic, Valve added some new official Steam store tags for games.
Releasing a statement on X (formerly Twitter) the Kitfox Games account (who publish Dwarf Fortress) put up an image post on January 30th noting how Valve initially said no to adding a Dwarf tag. However, Valve would add it officially if people started using it on Steam. In the post Kitfox also mentioned how the likes of elf, centaur, wizard and more aren't tags.
Well, fast-forward to February 1st, and Valve did an initial little joke adding Elf as a full Steam tag and the official Steam account quickly replied to joke "Oh whoops, wrong button!" and then linked to the also new Dwarf tag.
So there we have it, now as of February 1st have both Dwarf and Elf as official Steam tags.
You can see a list of tags along with the dates they were officially added on SteamDB.