Data on non-SPDX licenses?

[donmccurdy]

Hi, I'm hoping to gather aggregate data on a group of licenses that do not currently have SPDX identifiers. These licenses would be relatively easy to identify from the text of the license file, or possibly from their short identifiers (which are not SPDX approved). I'd be more than happy to sort through data or make a pull request if that's required. Or, if the source data contains SPDX identifiers where present and nothing otherwise, then I suppose this might not be possible.

Any pointers one way or another would be helpful, thanks!