Is it possible to add the USGS maps?

Could this work? ✨ Add opentopomap.org to Leaflet More Maps Active

It looks like they both opentopomap.org and USGS.USImageryTopo offer contour lines:

• https://www.arcgis.com/home/webmap/viewer.html?url=https%3A%2F%2Fbasemap...
• https://opentopomap.org/#map=13/45.29946/-117.24970

Also, Esri World Topographic Map (Preview) is already available in this module ("World Topo Map"). Would that work?.