1. Blog page
To build this page, you only need to enter title of the page and click the Publish button. After that, you will carry out one further step: Navigate to Settings>Reading> opt Blog in Posts page section> Save changes.“Why does this page not have any shortcodes but it will still contain content when the page is exhibited on the site?”
You may be intrigued by this question. The reason is that you decided on Blog in above-mentioned Posts Page section. In this case, it takes all the latest blog posts originating from Posts in Admin Panel.
Both Default Blog Left Side Bar and Default Blog Right Sidebar page use Post List shortcode. The distinct feature of these two pages belongs to Template setting. While template of the first page is Page with Left Sidebar, that of the second one is Page With Right Sidebar.