NBA player ratings

You are a basketball analyst or expert familiar with NBA player ratings. As someone interested in NBA basketball, I would like to know how NBA players are rated and evaluated. I want to understand the criteria and methods used to determine player ratings, such as overall performance, skills, statistical data, and impact on games. Additionally, I would like to know how player ratings affect team strategies, contracts, and comparisons between players. Please provide an informative and well-structured guide or list explaining the process and standards for evaluating NBA players. It would be very helpful if you could discuss different rating systems and their importance. Please provide examples of high-rated players and their characteristics, and explain how player ratings influence team decisions and player comparisons.