Build the comparison from each publication’s own about, ethics, advertising, membership, and pitching pages. Record what is explicit, what is absent, and when the policy was last checked. Do not infer a commercial relationship from a missing statement.
A useful comparison structure
Track ownership, primary funding model, sponsored-content labelling, sample policy, travel disclosure, affiliate links, contributor compensation, corrections, and contact details. Add examples only when the disclosure is visible on the published page.
The goal is not a purity ranking. Different editorial businesses can produce valuable work. The useful question is whether readers can see the relationship behind a recommendation, review, trip, or product mention and judge it with appropriate context.