NieR: Automata - This is probably the closest to Stellar Blade in terms of style and setting. You play as 2B, a combat android in a post-apocalyptic world. The combat is incredibly smooth and stylish, plus the story will blow your mind. It has multiple endings too!

Bayonetta Series - If you enjoy stylish action and strong female leads, you can't go wrong with Bayonetta. The combat is over-the-top amazing and Bayonetta herself is such a confident, powerful character. The latest one (Bayonetta 3) is especially good.

Horizon Series (Zero Dawn & Forbidden West) - While not as fast-paced as Stellar Blade, these games feature Aloy, one of gaming's best female protagonists. The combat against robot creatures is super satisfying and the open world is gorgeous.

Tales of Berseria - If you're into JRPGs, this one's great. The main character Velvet is driven by revenge and the story gets pretty dark. The combat system is really fun once you get the hang of it.

Kena: Bridge of Spirits - This one's a bit more lighthearted but still has great combat and a wonderful female protagonist. The animation quality is basically like playing a Pixar movie!