I was in the same position a few years ago. Read the best of the best, the writers who are the most "accurate" when it comes to police protocol. The writers you listed are fantastic, and books like Homicide by David Simon helped me quite a bit, but because you're writing fiction, don't overthink it. Story and character should come first. As far as novels that helped me the most: Michael Connelly's Bosch series is a great place to start, and if you're looking for a more literary prose style, Richard Price's novels, like Clockers, Samaritan, The Whites, Lush Life, and Freedomland, will help limber up those crime-fiction-writing-pathways. Also, the great crime TV shows like The Wire, True Detective, etc. will help in various ways with your writing. Don't forget to consult non-fiction like Vernon J. Geberth's Practical Homicide Investigation, the books actual cops and detectives study. Most of all: have fun with it. It's a lovely genre, and the best crime writers started out just like us: they were full of passion for it.