For Info, you have same panel for rigid bodies under Scene Tab.
It was already as is in 2.79.
It is true that removing layers and introducing view layers is not really helping with rigid bodies simulation.
You can set different elements of rigid body world into several collections and don’t display them all into different view layers.
Simulation will always look coherent to displayed view layer. So baked simulation will be relative to active object of displayed view layer.
So in practice, you can set rigid bodies on one view layer and bake to keyframes some of those, switch to another view layer with a force fields, bake to keyframes and obtain a result with some objects influenced by force field and other that are not in a third view layer.
But they can not interact because their movement has not been simulated at same time.
Collisions groups were simply renamed Collections but are still layer bits as in 2.79.
It is probably planned to change those buttons by a collection name.
At that moment, restoring 2.79 behavior for force fields inside same kind of force fields collection in a similar panel would be satisfying.