Lighting multiple environments within one scene

I want to have 3-4 completely different environments within the same unity scene, most probably using RealtimeGI or Mixed. These environments however will have totally different geometry, lighting, reflection probes, light probes etc. At runtime the one which is required will just be activated and the others deactivated. Is it possible to have 3-4 different GI caches for the same scene, and to switch between them and bake whilst working, and then how do I turn each one of those into a profile you can use at runtime?

I have seen you can bake different lightmaps from the same scene, or turn reflection probes on/off independently. But I am not sure how to tie all that together to create 3-4 completely different lighting setups. How is the precomputed part of the realtime GI stored? Is what I want to achieve here even possible?