This GitHub page was the starting point: https://government.github.com/community
Querying wikidata may also be useful https://github.com/github/government.github.com/issues/877
Added: note about your project at https://github.com/github/government.github.com/issues/1167
The goal is to have a deeper level view of public government orgs, including a more granular view of contributors and how they interact with code.
Great idea about wikidata! That's another data rabbit-hole to climb down into.