I'm sure you are well aware that if the gravitational force was not instantaneous, all the planets in orbit around the sun would have fallen into the sun a long time ago. I have yet to see anyone find a way to get around that mathematical hurdle.
I might point out that our understanding of gravity is non-existent. I'm still waiting for someone to produce a gravitational field in a laboratory setting so that researchers can perform experiments and learn more about gravity.
The planets stay in their positions because of eulers equations being a key to the building blocks of life itself, the alternating compression and decompression and neutral zone between them based on the wavelength of the electron and the proton has been called the interscalar temporal matrix, and it applies to all levels of life. Plants, animals, planets, all follow geometric coded systems. Something that is easy to dismiss until it is also seen in totally new created forms, the only way a new material being made can hold it's atomic form is if it follows this known coding, if it doesn't it collapses and the key to it not collapsing it is the application or force of these geometric codes being applied to it. It is the universal stabilizer of all things. The size of your eyes at birth, length of your limbs, periods of fertility...etc (pretty sure davinci was close to figuring out this code) He knew it was there but if he did find it we weren't told about it.
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Following these out exponentially from biologic life the code starts at zero. Life is the zero point here, sub life, going towards the atomic it scales down in harmonic ratios towards quarks at near -135 times the base numbers, and towards galaxies and super galaxies the same but positive but we aren't able to observe much bigger than the oscillation closer to 108 times.
I am probably not explaining that very well and I am sorry for that but even still, life came first, there was no big bang, and there won't be one in the future. Because the universe as you see it is a projection of life, of observer. A fractal of consciousness individuated from the super observer that is all of us combined.
It's also found in the great pyramid hidden in its architecture... Although the actual scalar exponential in our solar system doesn't match it 100% anymore, like the earths polar axis, it has warbled a lot since the destruction of the two planets that used to be there. What I don't know is whether or not this would change our gravity frequency from normal too.
But some advanced thinking biologists are looking into how this code and the changes of plants switching to seasonals sometime billions of years back is also connected, especially at and within fungal life.
I don't give a shit whether you believe in the big bang or not and academic sciences, but don't dismiss the flawless geometry built into life and mapped by some of the smartest scientists on the planet over hundreds of years in any case. That geometry, the perfection of frequency harmonics isn't emergent, it is part of the unified field theory I guess you could call it. Or ignore it, free will n all that