When is ClassificationPrimitive supported :
appearance : new Cesium.EllipsoidSurfaceAppearance({
material : ......
}),
This allows for a rich and colorful visualization，The animation will be even more wonderful！
Do you mean you want to be able to apply classification to the globe? If so, you can already do that! Check out this example:
You might also be interested in checking out the globe materials example: