I feel like this discussion gets dominated by the same five titles. The obvious ones that flood my feed are 'A Good Girl's Guide to Murder', 'Six of Crows', 'The Cruel Prince', and anything Leigh Bardugo. They're good! They fit. But I sometimes wonder if BookTok's algorithm creates a feedback loop where only the most cinematic, instantly-grabbable stories rise to the top, and other brilliant, quieter books about strong girls get buried.
For something different, I'd point to 'The Gilded Ones' by Namina Forna. It's a West African-inspired fantasy where the protagonist, Deka, literally has to fight her way out of a patriarchal system that declares her 'impure.' Her strength is ferocious and deeply physical, but also rooted in forming sisterhood with other outcast girls. The world-building is harsh and vivid. It didn't have that same slick, romance-forward vibe a lot of viral books do, which I actually appreciated.
Also, 'Firekeeper's Daughter' by Angeline Boulley. Daunis is an Ojibwe teenager navigating two worlds, and her strength is investigative, cultural, and deeply protective of her community. It's a thriller, but the core of it is her quiet, relentless intelligence and moral fortitude. Seeing a strong protagonist who leads with her mind and her heritage rather than a sword or a chosen-one destiny was incredibly refreshing. My feed was all fantasy for months, so this was a standout.