How might someone find out which assets are “monetized in all countries”?

To identify assets monetized globally, navigate to the Asset report within YouTube Analytics. This report provides detailed information about your content assets. Once in the Asset report, you can apply a filter or sort by "match policy." The match policy column will indicate the specific monetization policy applied to each asset, including those set to "monetize in all countries." The Demographics report focuses on audience characteristics, not asset monetization status. The Video report details individual video performance, but the Asset report is specifically designed for managing and analyzing content ID assets and their associated policies. While the Video report shows "Ads enabled," it doesn't directly indicate the global monetization status of the underlying asset as clearly as the Asset report's match policy.