WP: Show post type Singular Label (works great with ACF plugin))

// Show post type Singular Label on singular post page:
$post = get_queried_object();
$postType = get_post_type_object(get_post_type($post));
if ($postType) {
    echo esc_html($postType->labels->singular_name);
}

// Show post type Singular Label in the loop:
$postType = get_post_type_object(get_post_type());
if ($postType) {
    echo esc_html($postType->labels->singular_name);
}

// Show post type Singular Label above the top of 'while':
$postType = get_post_type_object( 'photogallery' );

// >> These two usually contain the post type name in plural. 
// >> They may differ though.
echo $postType->label;
echo $postType->labels->name;

// >> This one holds the post type name in singular.
echo $postType->labels->singular_name;