I get where you're coming from - academic interests and law-related activities are the main things they want to see in our personal statements. But don't dismiss the power of other books too. They can show that we're well-rounded and have the ability to see things from different angles, which is pretty important in law.
Take '1984' by George Orwell, for example. It's not a law book, but it makes you think about things like privacy, government control, and civil rights - all super relevant to law. Or look at 'The New Jim Crow' by Michelle Alexander. It's not about law as such, but it dives deep into how laws can really impact marginalised communities.
Even something like 'Justice: What's the Right Thing to Do?' by Michael Sandel is useful. It's all about what justice means, which is a pretty big deal when you're studying law hehe
And you're right about 'To Kill a Mockingbird'. It's like the go-to book for every law school applicant, but there's a ton of other books out there that can give us fresh insights into legal themes.
So yeah, the admission team definitely wants to see our law-related interests, but showing them that we have a broad range of knowledge and understanding isn't going to hurt. Good luck!