WordPress – display relationship between blog posts and custom posts

Below is the updated code to fetch posts, please check is that helpful:

$documents = get_posts(array(
                         'post_type' => 'post',
                         'posts_per_page' => -1,
                         'meta_query' => array(
                          array(
                                'key' => 'our_people_author', // name of custom field
                                'value' => '"' . get_the_ID() . '"', // matches exaclty "123", not just 123. This prevents a match for "1234"
                                'compare' => 'LIKE'
                                    )
                                )
                            ));