Lyra Silvertongue from His Dark Materials

The serial series with the Romans as well as the Greeks was also really good

Jack Reacher

Hiro Protagonist from Snow Crash, Corwin from The Chronicles of Amber, and Danlo from A Requiem for Homo Sapiens series.

William Stoner

Eugenides from the Queen's Thief series.

Holden from The Catcher in the Rye.

There's a character in Marion Zimmer Bradley's Stormqueen who can foresee all possible alternative outcomes of any action he takes and it nearly causes complete inability to decide or act before he learns to control it. This gave me powerful insight into myself because i overthink things and have decision paralysis.

Same Temple, from the Gone Series. For some reasons he always stuck with me, and he was the first one that come to my mind when I read this question. This book series it’s actually one of the best series I’ve ever read. It’s so weird, sometimes the plot is all over the place, but the characters are some of the best written characters I’ve ever read. Such good books, unfortunately they are not translated in my language, so I had to read them in English and even though I’m very fluent in English I prefer to read in my language as I find it more relaxing.

Logen Ninefingers

Martin Silenus from Hyperion

Daniel from The Shadow of the Wind

The Underground Man.

It's hard to think back on all the books I've read, but off the top of my head I'd say Ender from Ender's Game and Gideon from Gideon the Ninth

Meggie and Moe from Inkheart by Cornelia Funke.

Also, I don't know if Dustfinger counts as a protagonist, but I think he might be one of my favorite characters I've ever read.

Would The Doctor be cheating? If it were, Samuel Vimes.

YT

Patrick Bateman, American Psycho

Well, what did they expect from a teenager?On a more serious note,yeah, he can be quite annoying, but he also has some redeemable qualities

Isobel Fairfax from "Human Croquet." She was both relatable and omniscient, a young girl and ancient narrator, really sad but fairly droll and all that.

Probably because most readers found(/still find) Holden annoying.

Why would it be an unpopular opinion?

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Kaz Brekker from Six of Crows and Sidney Carton from A Tale of Two Cities, and David Copperfield himself.

Yeah! And thinking about it a little more, it also serves in-universe to make Lauren a softer and kinder person in Butler's "what might a person who started a religion as a teenager be like" experiment.

As a person, Lauren is so stubborn and ambitious. She has a huge sense of "destiny" and self-importance even at a young age that leads her to view others kind of as pawns or tools in her grand vision.

If she didn't have experiences (hyper-empathic ones) which forced her to constantly directly confront the pain and humanity of others, it might be easy for her single-minded grand vision and self-righteousness to eclipse her empathy and altruism and lead her to trample others underfoot in pursuit of her own goals and affirmation of her own beliefs.

In that regard you could examine Christian America/President Jarrett and maybe Marcus maybe as sort of parallels to Lauren, or more examinations of how belief, vision, and empathy interact with each other in people and in society.

honestly, read the first one, the second if you really want to, and imagine an ending yourself instead of reading the third. It's quite enjoyable like that, honestly.