Knowsabout?

Hello,

To add the knowsAbout to your schema, you may need to use and customize this filter on your site:

add_filter( 'rank_math/json_ld', function( $data, $jsonld ) {
	$data['ProfilePage']['knowsAbout'] = 'knowsAbout';
	return $data;
}, 99, 2);

If you’re not sure how to add this code, you can follow this guide:
https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps.