Their is a new set of books called the Aristillus series by Travis J. I. Corcoran that has been written in the last few years that are pretty damned good. They are both Prometheus award winners (for Libertarian Science Fiction books... Ayn Rand was their first Hall of Fame inductee)
Book one is
The Powers of the Earth and book two is
Causes of Separation. Book three is on the way.
They are basically about a group of people who left Earth and created their own Galt's Gulch on the moon. They don't mention Any Rand's books at all, but that is the premise. Unlike Atlas Shrugged which spends most of the time building up to Dagny Taggart leaving for Galt's Gulch, this is more about what happens after they already left and the politics on both sides as they prepare for war.
If you like game of thrones for the political part and are into technically detailed discussions about engineering, rockets, orbital mechanics, etc. Then this is a good set of books to read or listen to on Audible.
Also the primary protagonist is from Texas which revolted and started the whole thing.
It's pretty damned good