We have ESRI "Imagery with Labels" basemap and some operational layer - Points. The labels from the basemap are on the front, and overlay the operational layer.
The hybrid layer uses two different Map Services to show the imagery and the labels and I think the basemap constructor for that layer will always put the labels on top. If you want to manipulate the labels layer seperately, you might need to use the satellite layer (Imagery without labels) as basemap and add the label reference layer separately (Reference/World_Boundaries_and_Places (MapServer) ) . Then you can use the map.reorderLayer function (Map | API Reference | ArcGIS API for JavaScript 3.18 ) to set the labels layer index
The hybrid layer uses two different Map Services to show the imagery and the labels and I think the basemap constructor for that layer will always put the labels on top. If you want to manipulate the labels layer seperately, you might need to use the satellite layer (Imagery without labels) as basemap and add the label reference layer separately (Reference/World_Boundaries_and_Places (MapServer) ) . Then you can use the map.reorderLayer function (Map | API Reference | ArcGIS API for JavaScript 3.18 ) to set the labels layer index
