I have Kim Stanley Robinson's Mars Trilogy on my shelf waiting for me to finish The Expanse series. Maybe that?
Also, book 7 of The Expanse becomes a lot easier because you stop having the TV show to compare to. And let me tell you, you think you know what Duarte is doing on Laconia, but my friend you don't. The prologue of book 7 has one of those "I'm sorry, WHAT" moments that really launches you into the next story arc