Di The WordPress.com Blog:
Twenty Nineteen was designed with simple but sophisticated typography and a pared-down, open aesthetic, making it a great foundation for a variety of websites. It also fully supports the new WordPress Editor, which allows you to create a wide range of content for your site.
Twenty Nineteen gives your featured images a bold treatment on posts and pages: the images cover the full width and height of the screen, along with a color overlay which can be changed in the Customizer.
FONTE : The WordPress.com Blog