A legal entity label is evidence, but the core assessment can focus on Activity X, by Organization Y, for Beneficiary Z.
Food, shelter, homelessness, impoverished people and economic opportunity.
Education, training, literacy, research and public-interest knowledge.
Health, disability, disaster relief, safety and humanitarian assistance.
Community development, volunteerism and responsible local programs.
Conservation, animal welfare, culture, heritage and other public benefit.
Tax deductibility, government eligibility, grants, procurement and regulated benefits require their own governing legal test.