An elaborated article about where blog posts go on WordPress:
Blog posts go into different WordPress folders based on their type. The most common places blog posts go are in the “Posts” folder, but they can also go in the “drafts” folder and the “pages” folder.
Posts are typically published on a WordPress site when they are ready to be seen by the public. Bloggers typically publish new blog posts in the “Posts” folder, but sometimes they publish them in other folders, depending on what they are trying to achieve.
The “Posts” folder is where blog posts are stored on a WordPress site. When a blogger publishes a new post, it goes into this folder. This is where all of the blog post content lives.
New blog posts will also have a “date” field set that tells WordPress when the post was published. This field is automatically populated with the date and time that WordPress was installed, or when the post was edited if it was published from a plugin or an external source.
The “drafts” folder is where blog posts that have not yet been published live. When a blogger creates a new draft post, it goes into this folder. This is where blog post content that has not yet been published lives until it is ready to be published.
A draft post will have a “date” field set that tells WordPress when the post was created, but it will not have a “date” field set that tells WordPress when it was last updated. This field is automatically updated whenever the post is edited, which means that it will always show the current date and time.
The “pages” folder is where blog posts that have already been published live. When a blogger publishes a new page, it goes into this folder. This is where all of the pages on a WordPress site live. A page will have a “date” field set that tells WordPress when it was last updated, but it will not have any other fields set.
The only way to see which pages were last updated for a given date range is to view the file history for that page. The file history for a given page can be found in the Pages menu item under the Posts menu item on the admin screen of your WordPress site.
Bloggers can also publish blog posts to their websites in other ways besides putting them into the “Posts” folder. For example, they can publish them as an attachment to an email message or as part of an RSS feed submission.
All of these types of postings would go into their respective folders on your website, depending on how you published them.