The interesting thing of Electromagnetism is that it is an extreme strong force,
while gravity is an extreme weak force.
For this reason it is easy to find some models in which (Newton's) gravity
seems to be some direct consequence of electromagnetism.

The main problem is that electromagnetic forces are all related to charge.
Objects connected to earth will have the same charge,
and thus have no electromagnetic force between them.

A dielectric force that is sometimes proposed is even 1/R^4,
and we already know that as van-der-Waals force.
Tesla described it as a magnetic force, but we can see with super-conductors that it works different.

And that is usually the point with these theories:
We already see these electromagnetic forces in nature in a different way.
You can use electric charge to levitate small objects.

Additionally the total sum of charge of a planetary object is around zero.
And if we look at the sun, a planet and its moons, all three would need different charges.
And different moons would repel each other.

Where may we find electromagnetism in relation with gravity?

I do think that electromagnetism has influence in the stabilization of the orbits of planets and their moons.
The dust rings around Saturn are likely of one charge, making the the dust-particles repel each other.

We can also see that the Sun is very electrically active.
We see huge electrical currents, showing very strong magnetic fields (0.1 Tesla)
We also see electrical plasma outbursts and electrical turbulence in the solar wind.

What about the nucleus?

Inside a nucleus we see very strong positive charged protons,
but they do not repel each other.
In the standard model we use a different force to describe that.
But what if this nucleus is locked up in a separate dimension,
where the space around it is limited. And where the electrical force works different.

The amount of protons and neutrons describe the mass of an object. So this separate dimension or locking system could potentially be related to gravity.

And we can also see something similar with how
Heisenberg's uncertainty principle can already give us a description of gravity. Explained here