Get Posts (Blog) Page Title (Custom WP Function)

functions.php

/** The Posts (Blog) Page Title */
require_once( 'library/get-posts-page-title.php' );

get-posts-page-title.php

<?php
/**
 * Get and Display the Posts (Blog) Page Title
 * 04/26/2018
 * @author Jonathan Brockett
 *
 * Requires: WordPress @link https://codex.wordpress.org/
 */
 

/**
 * Gets the posts (blog) page title
 * @return string The page title of the posts pages, usually the blog page
 */
function get_the_posts_page_title() {
  $page_for_posts = get_option( 'page_for_posts' ); // Gets the page the posts (blog) uses
  $posts_page_title = get_the_title($page_for_posts);

  return $posts_page_title;
}

/**
 * Displays the posts (blog) page title
 */
function the_posts_page_title() {
  echo get_the_posts_page_title();
}

index.php

<?php
/**
 * The Posts Page Title (The Blog Page)
 */
?>
<?php if( is_home() && !is_front_page()): ?>
	<header>
		<h1 class="entry-title"><?php the_posts_page_title(); ?></h1>
	</header>
<?php endif; ?>