What are the possibility values that can adjust after light bake?

Hi everyone,

 As I know that after baked, we can't adjust certain things such as rotating a directional light or move static meshes and if we do that lead us to bake once again. So I want know that what are the values can be changeable after bake lightmaps? at the same we don't need to rebuild light-maps for those changes. 

For example, If I’m right we can change a light intensity or light colour of stationary type lights by using blueprints or even directly in the details panel. These change won’t affect light-maps. so we don’t need to rebuild again.

So like I said,
can we change the material to a mesh?
can we adjust PostProcessVolume?
can we adjust emissive light values? and like what are the other values that can be changeable?