Get All Fields for All Group Custom Post Types

// WP_Query arguments
$args = array(
	'post_type'              => array( 'group' ),
	'post_status'            => array( 'publish' ),
	'has_password'           => false,
	'nopaging'               => false,
	'posts_per_page'         => '10',
	'posts_per_archive_page' => '10',
	'ignore_sticky_posts'    => false,
	'order'                  => 'ASC',
	'orderby'                => 'title',
	'meta_query'             => array(
		'relation' => 'AND',
		array(
			'key'     => 'post_id',
			'value'   => '1944,1945,1946,1947,1948',
			'compare' => 'IN',
			'type'    => 'NUMERIC',
		),
		array(
			'key'     => '_form_id',
			'value'   => '2',
			'compare' => '=',
			'type'    => 'UNSIGNED',
		),
		array(
			'key'     => '_field_10',
			'compare' => 'EXISTS',
			'type'    => 'UNSIGNED',
		),
		array(
			'key'     => '_field_5',
			'compare' => 'EXISTS',
			'type'    => 'CHAR',
		),
		array(
			'key'     => '_field_7',
			'compare' => 'EXISTS',
			'type'    => 'CHAR',
		),
	),
);

// The Query
$query_group = new WP_Query( $args );

// The Loop
if ( $query_group->have_posts() ) {
	while ( $query_group->have_posts() ) {
		$query_group->the_post();
		// do something
	}
} else {
	// no posts found
}

// Restore original Post Data
wp_reset_postdata();