For Azure Maps, this is documented here: https://learn.microsoft.com/en-us/azure/azure-maps/supported-map-styles
For the Windows UWP map control, this is documented here: https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.maps.mapstyle?view=winrt-22621 Note that the UWP Map control uses Bing Maps, and that Bing Maps retirement dates have been announced: https://www.microsoft.com/en-us/maps/bing-maps/licensing