You're right. Looking at the list again, there are a lot of countries missing. Like Finland, which vaionko mentioned and several others from all kinds of continents. But I think what you said also applies to a lot of other democratic and free countries in the list. For example if I look at the list of Germany, where I'm from... That mainly lists books that include holocaust denial (which is a crime here, due to history) or other misinformation concerning that. And instructional books on how to build bombs or poison someone. So it's not like our courts are banning books without a proper reason, either. And I think it mainly concerns distributing and selling those books. Owning them is fine, with more or less the one exception of child pornography.

And it's not the government's job to ban books here, either. These are some individual(?) court rulings.

But with that said, my country isn't at the top of freedom of speech. I think we're cutting down on libel and defamation more than some other countries. And sometimes an author or publisher gets sued for publishing a book containing doxxing or lots of personal information abot celebrities/polititians without their consent. And then that's effectively banned from being distributed.