npm fund [<pkg>]
This command retrieves information on how to fund the dependencies of a given project. If no package name is provided, it will list all dependencies that are looking for funding in a tree-structure in which are listed the type of funding and the url to visit. If a package name is provided then it tries to open its funding url using the --browser config param; if there are multiple funding sources for the package, the user will be instructed to pass the --which command to disambiguate.
The list will avoid duplicated entries and will stack all packages that share the same type/url as a single entry. Given this nature the list is not going to have the same shape of the output from npm ls.