CPTs with Taxonomies Relationship

Hi

New user, impressed already.

I have a CPT called Profile that I want users to create and while doing so will add skills (a taxonomy of Profile but also three additional CPTs called Occupation, Industry and Program).

I want to be able to display "related" occupations, industries and training programs in the sidebar of a Profile (in cases where individual posts of those CPTs have the same skills).

What relationship should I be using here? This is what I believed to be correct for a relationship between Skills and Occupations but it doesn't seem to be working.

add_action( 'mb_relationships_init', function () {
    MB_Relationships_API::register( [
        'id'   => 'skills_to_occupations',
        'from' => [
            'object_type' => 'term',
            'taxonomy'    => 'skill',
        ],
        'to'   => 'occupation',
    ] );
} );

Appreciate any assistance you can provide.

Thanks