2018 Important Schema Tags
Organization should be sitewide
*The most important part appears to be the SameAs attribute in this list. Make sure this connects Facebook, Instagram, Twitter, LinkedIn per entity. If you have more social profiles, add them. They need to be unique per location (Facebook allows multi location). It doesn’t matter if you even post on them, just make sure they link back exactly to your specific URL without redirects.
SiteNavigationElement Schema sitewide for the primary menu. Pro tip: in WordPress you can make a menu specifically for this and help control your sitelinks in the SERPs.