Imagery
Cesium ion
Bing Maps Aerial
Bing Maps Aerial with Labels
Bing Maps Roads
Sentinel-2
Blue Marble
Earth at night
Natural Earth II
Other
ESRI World Imagery
ESRI World Street Map
ESRI National Geographic
OpenStreetMap
Stamen Watercolor
Stamen Toner
Terrain
Cesium ion
WGS84 Ellipsoid
Cesium World Terrain