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  • Hi John,
    I figured out what went wrong in the first place.
    In your solution:

    if (get_field('your_field_name') != $last_value) {
            // ourput heading for next section
            // your code here
            // set last value to this value
            $last_value = get_field('your_field_name');

    you get the data with get_field('your_field_name') from the first item in the database, in my case this was always 3. So it is not the data from the first item in the query. And that’s why I got stucked.
    After some serious thinking and a lot of trial and error I came up with this solution where I use a For loop to get everything organised by label (division):

    // Get the values from the ACF object (radio buttons)
    $all_names = get_field_object('medewerker_werkzaam_bij');
    // Put the choices from that object in an array 
    $all_label_names = $all_names['choices'];
    // Count the number of items to use in the 'For' loop. Because a loop starts with '0', decrease the value for that variable with 1				
    $num_labels = count($all_label_names)-1;
    for ( $my_label = 0; $my_label <= $num_labels; $my_label++ ){
    	$all_query = new WP_Query(array(
    		'post_type'			=> 'collegas',
    		'posts_per_page'    => -1,
    		'meta_query' 		=> array (
    									'label' 	=> array (
    										'key' 	=> 'medewerker_werkzaam_bij',
    										'value' => $my_label,
    									'persoon' 	=> array (
    										'key' 	=> 'medewerker_achternaam',
    		'orderby'			=> array (
    									'label' 	=> 'ASC',
    									'persoon'	=> 'ASC',
    	if ( $all_query->have_posts() ) {
    	$my_label_name = $all_label_names[$my_label];
    	<h2 id="<?php echo $my_label_name; ?>" class="<?php echo $my_label_name;?>"><?php echo $my_label_name;?></h2>
    	<div class="<?php echo $column_class; ?>">
    		while ( $all_query->have_posts() ) {
    			get_template_part( 'loop-templates/content-collegas', get_post_format() );
    	} else {
    		get_template_part( 'loop-templates/content', 'none' );

    This works for me as I wanted it in the first place.
    But thank you for replying and pushing me in the right place