My limiting factor here is I have to have read the book. Folks are welcome to recommend more books, following that same rule.

The Root by Na'amen Gobert Tilahun. One of the most original sff books I've read in the last couple of years. First of a trilogy. Second one's on my shelf.

Redemption in Indigo by Karen Lord. Her other books are also on my shelf. I expect to be recommending them as well.

The Stars Change by Mary Anne Mohanraj. Grab it and read it. I'm not just saying this because I spotted a Tuckerization of an amazing woman I knew (and I've no idea how many Tuckerizations I may have missed.)

Babel-17 by Samuel Delany. (There's a lot of Delany I've not yet read. I fell hard for this one.)

A Blade So Black by L. L. McKinney. I know the second one is out.

Prey of the Gods by Nicky Draden is amazing and also one of the most original sff books I've read recently. Temper is even better.

The Ballad of Black Tom by Victor LaValle is in dialogue with one of Lovecraft's more racist short stories -- and I mean more racist for Lovecraft. The Changeling had me early on and then again with the sequence that made a trip from one subway stop to another mythic.

Pet by Akwaeke. About as gentle a way to talk about abuse and what a community does not want to think about as I've seen.

And, if you're open to works in translation, there's The Three Musketeers, Twenty Years After, and The Count of Monte Christo by Alexandre Dumas. Dumas rocks.
.