City of Edmonton has an excellent data set to assist with entry into JOSM. navigate to https://data.edmonton.ca/ to locate data sets.

example: Street lighting https://data.edmonton.ca/Transportation/LED-Streetlights-Map-View/9xmi-y7kn

This is a giant data set, but data can be exported for use directly to CSV, XML, etc.. or you can further make use of the API to select a subset by clicking on the view source data:

rxke-mcvd : verify the right data set endpoint location radius (in m?)

https://data.edmonton.ca/resource/rxke-mcvd.geojson?$where=within_circle(geometry_point, 53.595, -113.479, 1000)

adjusting the circle to a suitable radius and location in the city to start working with the data, consult the API for more details on points vs geometry.

Once downloaded as geojson, import to JOSM to help with your edits.