What are five books that will make me more knowledgeable than 80% of people in a specific field?

I'm looking to minmaxx knowledge. I'm looking for 2-7 books that provide a deep understanding of a specific field, enough to be more knowledgeable than a very clear majority of people in that area. Any field is fair game,and the more niche or specific the better. What are the best book recommendations to achieve this level of expertise and in what order should I read them

Please do not recommend self help or dave ramsey style financial advice.