The best sources I've encountered are the ones where they source their information to some form of verifiable data (not blog/youtube/rag), lay out their reasoni

The best sources I've encountered are the ones where they source their information to some form of verifiable data (not blog/youtube/rag), lay out their reasoning, fix/own mistakes, have clear information about who they are, and their information checks out outside their sphere. Neither of these involve their stating any biases.