Because every business person needs to write well at work, there are hundreds of books specifically about business writing. I have a bookshelf and Kindle full of them because I read everything I can on this subject.
Many business writing books are meh, and some are good. One problem with a book specifically devoted to business writing is that business writing is comprised of different elements of general writing. A specific business writing book can be formulaic and reductive. “Use this model” doesn’t work well when the information that goes into that model changes and requires discernment.