Google published updates to the site names system, with expanded support for subdomains on all devices in English, French, German, and Japanese. We've expanded support for subdomains and compiled more information on how site names work in Search. Google recommends that the most effective way to suggest a preferred site name is through WebSite structured data, as detailed in the site name documentation. Google’s focus on providing accurate and representative site names improves the search experience for users and helps them find your site more easily. The suggested workaround for unselected site names could be especially helpful for some.