[ ] Also worth noting that ArcGIS Online comes some general categories that are derived from ISO and INSPIRE. Those could be good starting points, but my hunch is that you’re going to want to add additional categories to better support filtering and finding the right datasets.
MN DOT Governance
[ ] MN DOT Governance and Best Practices: A tailored document like this would be useful to encourage contributors to follow the same guidelines and understand which groups or tags need to be added for the data to be ingested properly. - MnDOT Governance and Best Practices and User Requirements (1).docx
Private Industry
ESRI GIS Metadata guidance
MN DOT Governance