I can do it in a 2d map using "angle", but that does not work in a 3d map.
Example that works in 2d, but not in a SceneView(3d):
// autocasts as new SimpleMarkerSymbol()
var marker = { type: "simple-marker", style: "cross", angle: 85};
Doesn't look like angle for markers is supported in 3D.
SimpleMarkerSymbol | API Reference | ArcGIS API for JavaScript 4.7