Fun fact,
If you have a Cube (or any Mesh Object) Selected in Object Mode and hit CTRL+5, Blender Adds a Subdivision Surface Modifier of Level 5, as you know, but if you Have a Cube (any Mesh) Selected in Sculpt Mode and press CTRL+5, Blender Adds a Multiresolution Modifier of Level 5.
Both Modifiers can be used, they are very similar, but the Subdivision Surface Modifier has to be Applied, so it is more ‘destructive’ in a way.
But, Dynamic Topology and Remesh cannot be used together with a Multires Modifier.
