If anyone would like to contribute to the city names list for the map, please share here.

I will need the X and Y coordinates of the plot. To find these, open the AppOptions text file in your Civilization 6 folder (not the one in the Steam folder, the one typically in Documents), and search for these lines under the [Debug] section:

;Enable Debug information in the plot info tooltips.
EnableDebugPlotInfo 0

Change to:

;Enable Debug information in the plot info tooltips.
EnableDebugPlotInfo 1

X and Y coordinates will now be displayed in the tooltip that appears when you hover over a tile in-game.