Shortcode wordpress qui permet de lister les utilisateurs et d'afficher uniquement ceux qui ont un email avec le domaine voulu.

shortcode_wordpress_list_user_domain.php

// Use [collaborateurs][/collaborateurs]
add_shortcode( 'collaborateurs', function () {

	$search = "/@hotfirenet\.com$/i";

	$html = '<div id="collaborateurs" class="items">';	

	//$users = get_users();

	$args = array(
		'field'         => 'all_with_meta'
	);
	$users_query = new WP_User_Query( $args );	
	$users =  $users_query->get_results();	

	foreach ($users as $user) {

		if(!preg_match($search, $user->user_email))
			continue;

		// variables dispo
		// $user->ID
		// $user->user_login
		// $user->user_nicename
		// $user->user_email
		// $user->user_url
		// $user->display_name	

		// Avatar
		// echo get_avatar( $user->user_email, 96 );
		// echo get_avatar_url( $user->user_email );

		$user_info = get_userdata($user->ID);

		// $user_info->first_name;
		// $user_info->last_name
		// $user_info->nickname
		// $user_info->description 
		// $user_info->author_facebook
		// $user_info->author_twitter
		// ....

		ob_start();
		get_template_part( 'template-parts/collaborateur/content' );
		$html .= ob_get_clean();

	}	

	$html .= '</div>';

	return $html;
});