For search, showing things like area and start/end dates seems to make sense. Possibly even for inline/drop-down search, although screen real estate is at a premium there.
But things like "producer", "flautist", etc are far less obvious to distill automatically (especially taking localisation into account), especially for artists with dozens or hundreds of ARs. Same for things like memberships in groups.
In the inline context, if the dropdown list could include an icon that when clicked opened that entity's page in a new window, that would be convenient to check on multiple ambiguous hits.