Operational layers contain your data. Usually, a basemap sits beneath your operational layers to give them geographic context.
Referenced by: Group Layer, Webscene
Can be one of the following:
- Building Scene Layer (BuildingSceneLayer)
 - Catalog Layer (CatalogLayer)
 - CSV Layer (CSV)
 - Dimension Layer
 - Feature Layer (ArcGISFeatureLayer)
 - Gaussian Splat Layer
 - GeoJSON Layer (GeoJSON)
 - Group Layer
 - Image Service Layer (ArcGISImageServiceLayer)
 - Integrated Mesh 3D Tiles Layer
 - Integrated Mesh Layer (IntegratedMeshLayer)
 - KML Layer (KML)
 - LineOfSight Layer
 - Map Service Layer (ArcGISMapServiceLayer)
 - Media Layer (Media)
 - Object 3D Tiles Layer
 - OGC Feature Layer
 - Oriented Imagery Layer (OrientedImageryLayer)
 - PointCloud Layer
 - Raster Data Layer
 - Scene Layer (ArcGISSceneServiceLayer)
 - Tiled Image Service Layer (ArcGISTiledImageServiceLayer)
 - Tiled Map Service Layer (ArcGISTiledMapServiceLayer)
 - Vector Tile Layer (VectorTileLayer)
 - Viewshed Layer
 - Voxel Layer
 - Web Coverage Service Layer (WCS)
 - Web Tiled Layer (WebTiledLayer)
 - Web Feature Service Layer (WFS)
 - WMS Layer (WMS)