On OpenStreetMap there is the contact: tag which can indicate anything from a phone number to a facebook/instagram page. Would be nice to see those links on the info card of a POI.
Obv you can't include everything, but I would try and include as many as possible from this page atleast tbh, different parts of the world use different social platforms and such so might have one mapped more often than the other.
https://wiki.openstreetmap.org/wiki/Key%3Acontact%3A%2A
