Independent entity laws or description of the entities

Hello Rabbi,
Following the reading of Yuval Steinz’s book, Scientific Logical Missile.
A question occurred to me – is the propagation of gravitational/electromagnetic field waves faster than the speed of light, for example, ‘in the absence of such a thing’ and fills all of space instantly, or are they less fast and does it take time for gravitational field waves to propagate through space?
If they are faster, then the law is apparently external to the bodies and directly affects the entire space.
But they are less fast/at the same speed. There is a significant side to saying that they are part of the material.

Thanks in advance!