The New York Times Best Sellers
https://www.nytimes.com/books/best-sellers/
Amazon Best Sellers in Books
https://www.amazon.com/best-sellers-books-Amazon/zgbs/books
The Sunday Times Bestsellers
https://www.thetimes.co.uk/article/the-sunday-times-bestsellers-list-books-reads-authors-writers-wtf0fg8v7