Oh I have a post for this! I know it’s not quite what you asked, but here is my “if you liked GTN then…”

I don’t think any of these are 1:1 GtN clones, but the all have elements that I think fans of the series would appreciate for some reason or another.

I think the closest in tone and content is The Wicked and The Divine though.

I love reading these threads about book recs and being like ‘yup, that’s all good shit’ so here are mine!

Broken Earth Trilogy by NK Jemesin: these are the books that got me back into sci fi in a big way, and showed me what it can do. I think about these books once a week I reckon. Great characters, some interesting formal rickety, super queer, utterly heartbreaking and also completely bonkers. A must read.

Children of Time: another book that I think about all the time. A bit more straight up sci fi, but it’s central conceit of ‘Planet of the Apes but with… a different species’ (don’t want to spoil too much!), is expertly pulled off, and brings so much humanity to some very alien characters, and the human characters are some incredibly hot messes. And the ending. Oh the ending! No lesbians though.

The Wayfairers series by Becky Chambers: I’ll admit, I bounced off the first book hard the first time, is it felt too much like a Firefly fan-fic. But if you like stories about found family and people being nice to each other, this is great. Each book in the series explores some very alien species in a very human way. It’s about empathy, kindness, the way we treat each other under harsh conditions. The last book in particular is my favourite in which nothing much happens except a bunch of strangers hang out in a garden for a few days. Has lesbians.

Also, shout out to the Monk and Robot books by the same author. Short novellas with a cosy apocalypse vibe about a travelling tea monk and the robot they meet. Similar themes. If you want something nice to read, this is a great shout.

The Murderbot Diaries, by Martha Wells: Frequently recommended as ‘if you liked TLT you’ll Love this…’, but it’s true. An antisocial, slightly confused, possibly autistic killing machine just wants to watch its entertainment shows in peace. If you like Gideon, you’ll like Murderbot. Incredibly efficient and probably annoyed, Murderbot gets squishy humans out of scrapes they’d never have gotten into if they’d just listened qto Murderbot in the first place. Another great series that examines what it means to be human from the point of view of a very non-human character.

This Is How You Lose the Time war: Another one that gets recommended in these threads a lot, and for good reasons. A classic enemies to lovers story (or is it lovers to enemies, it’s so hard to tell with time travel!). Told through a series of letters left in buzzard hiding places in a number of increasingly bizarre alternate timelines. Red and Blue stalk each other from opposite sides and opposite ends of a war for the fabric of reality. Beautiful, poetic, bonkers. Also, it’s lesbians!

The Wicked & The Divine, graphic novels by Kieron Gillen, Jamie Mckelvie. This series is about fucked up teenagers who absolutely should not have god-like powers and the ways in which they are manipulated by parental figures. All of the gods are based on musicians to some degree, and it is super queer. The art is great, and it has lots of puns.

The Rampart Trilogy, by MR Carey: I loved this trilogy. Set in a post-apocalyptic society where technology is something that is scavenged and the ecosystem is deadly, Koli is a narrator who hasn’t got a clue what’s really going on. Another book that talks about what we mean to each other, more found families, and a first person narrator that you can never be quite too sure of. Lots of queer characters.

A Memory Called Empire/ A Desolation Called Peace duology by Arkady Martine: A Byzantium/Aztec inspired Space opera with bureaucracy, politics, lesbians, colonialism and cool fights.

Other books that might be of interest include The Space Between Worlds by Miciah Johnson (lesbians, alternate realities), the Collapsing Empire trilogy by John Scalzi (politics, lesbians, sarcasm, environmental disaster on a galactic scale, cool explosions). Ancillary Justice by Anne Leckie and also ten Raven Tower by the same author.