How to list user flags in node
You can relatively easy do that by adding a views contextual filter for the node id (nid) with the following configuration:


When the filter value is NOT in the URL: Provide default value -&gt; Content ID From URL
When the filter value is IN the URL or a default is provided: Specify validation criteria -&gt; Your CTs list
Filter value format: Node ID
The flag relationship used should be: by any user


Of course you can use that view as a block and place it wherever you like.