The single blog posts have the ability to display many things such as the title, featured image, tags, author bio, post meta, comments, related posts…etc. These sections can be enabled/disabled and re-ordered. Simply go to Appearance > Customize > Blog > Single to tweak your posts to your liking. Here you will find a setting called ” Single Layout Elements” which you can drag/drop to re-order or you can enable/disable.
For Developers (Adding new blocks): You can easily add/remove modules via child theme modifications. Have a look at the following snippet for an example.