WordPress search posts by creator identify with autocomplete

I’m utilizing autocomplete code as follows:

features.php

// add the ajax fetch js
add_action( 'wp_footer', 'ajax_fetch' );
perform ajax_fetch() {
?>
<script sort="text/javascript">
perform fetch(){
    jQuery.ajax({
        url: '<?php echo admin_url('admin-ajax.php'); ?>',
        sort: 'submit',
        knowledge: { motion: 'data_fetch', key phrase: jQuery('#key phrase').val() },
        success: perform(knowledge) {
            jQuery('#datafetch').html( knowledge );
        }
    });
}
</script>
<?php }

// the ajax perform
add_action('wp_ajax_data_fetch' , 'data_fetch');
add_action('wp_ajax_nopriv_data_fetch','data_fetch');
perform data_fetch(){

 $the_query = new WP_Query(
    array(
        'posts_per_page' => -1,
        's' => esc_attr( $_POST['keyword'] ),
        'post_type' => 'submit',

        ),
    );

    if( $the_query->have_posts() ) :
        ?><ul><?php
        whereas( $the_query->have_posts() ): $the_query->the_post();

        $myquery = esc_attr( $_POST['keyword'] );
        $a = $myquery;
        $search = get_the_title();
        if( stripos("/{$search}/", $a) !== false) {?>
            <li><a category="articles-link" href="<?php echo esc_url( post_permalink() ); ?>"><?php the_title();?></a> by <?php the_author(); ?></li>
        <?php }
    endwhile;
        wp_reset_postdata();
        ?></ul><?php
    endif;
    die();
}

Web page template.php

<enter sort="text" identify="keyword" id="keyword" onkeyup="fetch()"></enter>
<div id="datafetch">Search outcomes will seem right here</div>

This works nice for autocomplete looking out of posts, however I’m having nice issue permitting it to look by creator identify (with role->creator) as an alternative of, or in addition to submit title.

I’ve tried to make use of a WP_User_Query instead of the WP_Query like so:

$args = array (
    'function'           => 'creator',
    's' => esc_attr( $_POST['keyword'] ),
);
$user_query = new WP_User_Query( $args );
if ( ! empty( $user_query->outcomes ) ) {
    foreach ( $user_query->outcomes as $consumer ) {
        echo '<li><span>' . esc_html( $user->display_name ) . '</span></li>';
    }
}
    die();
}

This simply brings up the listing of each creator. Is there a technique to run a WP_User_Query with a whereas( $the_query->have_posts() ): $the_query->the_post(); as an alternative of a foreach ( $user_query->outcomes as $consumer ) {? Or is there another technique to permit the search to deliver up an autocompleted listing of posts by means of a username search? I can not determine how.

Thanks