Big Choropleth Figures - Example data?

I am working on an implementation of a new component for visualizing GeoJSON objects, initially with focus on Chropleth plots. I have previously noted people having issues with performance with this kind of plots. To test the performance of my implementation I would like to try out some of these problematic data sets / uses cases. So if you have such data / a use case that you are willing to share, please post a link here :slight_smile: