The short answer
Structured data (schema.org markup) can clarify the organization, author, article, product, breadcrumb, or other entity represented by a page. Google supports specific enhanced search appearances when the markup is accurate and complete. The reviewed Google documentation does not establish that adding schema causes any AI system to retrieve or cite a page.
Sources: Google — Structured data documentation · Schema.org
What schema can do
- Identify an organization, person, article, product, or breadcrumb trail.
- Connect a page to its author and publisher.
- Make dates, names, URLs, and relationships explicit.
- Support eligible enhanced appearances in traditional search.
What schema cannot do
- Supply evidence that is absent from the visible page.
- Make a page relevant to an unrelated question.
- Guarantee retrieval, ranking, citation, or recommendation.
- Safely describe content that users cannot see.
What should a GEO site use?
Really Good GEO recommends the most specific accurate type that matches the visible page. Common choices drawn from Google's supported types include Organization on the homepage, ProfilePage for an author, Article for editorial content, BreadcrumbList for hierarchy, Product or SoftwareApplication when applicable, and Dataset for published research data.
Source: Google — Structured data documentation