Stephen Hackett reviewed for the Sweet Setup different WordPress clients for the Mac, and came to the correct conclusion:
If you’re like me and would rather use a desktop application than a web app to manage your WordPress site, MarsEdit is the best route. It’s full of features, easy to use, and feels right at home on macOS.
There really is no contest. I only wish I could find something as good as MarsEdit for my iPhone and iPad.