I imagine it's sort of like how if you pour a bunch of liquids together (oil, water, etc), even if you blend them up (ignoring emulsification) they will natural

I imagine it's sort of like how if you pour a bunch of liquids together (oil, water, etc), even if you blend them up (ignoring emulsification) they will naturally separate into layers based on density, buoyancy, or some other property that causes them to separate again when subject to natural forces.