>>1041732I know Wikipedia and OSM are compatible, you can find a lot of OSM maps on Wikipedia. I also know TIGER files are fair game for Wikipedia too because they are public domain.
My region has a website with hundreds of GIS shapefiles/resources that are really useful. I'm just not entirely sure of their licenses because they are often not specified. On the one hand they are all government agencies publishing data and state data is considered public unless otherwise specified. The regional planning agency has the most interesting shapefiles and they are technically an entity of the state but I think things still get complicated there. I may just have to ask Wikipedia editors if they are fair game.
https://gisdata.mn.gov/dataset 