Google can recognize which author is the primary writer; it recognizes the same writing patterns and identical syntactic construction. Like a fingerprint; an author is identified. Goole Author Knowledge Panels are ideal; however, for most authors, begin with a declared entity home. Google's John Mueller recommends to link to a common or kind of like a central place where you say like everything comes together for this author which could be something like a social network profile page (or entity home) for example. Use that across the different author pages that you have when you're writing so that when our systems look at an article and they see an author page associated with that, they can recognize this is the same author as the person who wrote something else and we can kind of group this by entity and we do that based on maybe this common social networking profile that is there. Relating to the topic of adding author schema, he said we call that reconciliation when it comes to structured data, kind of recognizing which of these entities belong together. When seeking to gain a Google News Author Knowledge Panel or an Author Knowledge Panel, John recommends using a consistent author link to a central place where everything comes together helps when you are writing so Google's systems can recognize the author and group by entity. While Google no longer uses rel author annotation using structured data, article authorship schema plays a powerful role today.