A compiled, source-qualified dataset of tested, measured, or officially stated claims about how AI answer engines (Google AI Overviews and AI Mode, ChatGPT, Perplexity, Copilot, Claude, Gemini) select, cite, and send traffic to content, and what that means for brands, leads, and content programs. Compiled September 2026 by a multi-agent research run (researchers, qualifiers, organizers, and leader review); every source was fetched and checked, and each finding carries a credibility rating with its rationale.