Grouping WP query results

I have a Custom Post Type called “locations”; I also have custom taxonomies for “country” (e.g. term=USA), “city” (e.g. term=Austin), “state” (e.g. term=Texas), “classification” (e.g. classification = Restaurant). On the “locations” CPT, I select country, city, state, classification by way of ACF lookups.

I’m trying to subdivide results pages to look like the following:

City 1
Classification 1
Location 1
Location 2
Classification 2
Location 1
City 2
etc

and

Country 1
State 1
State 2
etc
Country 2
etc

I currently have a really ugly multi-loop function that handles some cases on my site, but doesn’t work for the above because they’re more complicated. Is there a more efficient way to this on the query level so that I don’t have to have all these nested loop? If I need to do it through loops, how would I modify the below to account for the above cases?

Example function call that does work:
list_posts_by_term_double_loop($term, $terms, “locations”, “country”, get_query_var(‘term’), “state”);

<?php 

function list_posts_by_term_double_loop($term, $terms, $cpt, $currentterm, $currentslug, $groupterm) {
	
	    foreach( $terms as $term ) : 
		$args = array(
			'posts_per_page' => -1,
		    'post_type' => $cpt,
		    'order_by' => 'name',
		    'order' => 'ASC',
		    'tax_query' => array(
		        'relation' => 'AND',
		        array(
		            'taxonomy' => $currentterm,
		            'field'    => 'slug',
		            'terms'    => $currentslug
		        ),
		        array(
		            'taxonomy' => $groupterm,
		            'field'    => 'slug',
		            'terms'    => $term->slug
		        ),
		    ),
		);

		$custom_query = new WP_Query( $args );
		$myCount = $custom_query->found_posts;
		$count = 0;
		
		while($custom_query->have_posts()) : $custom_query->the_post(); 
			if ($count == 0) { echo "<strong>" . $term->name . "</strong><ul>"; } 
?>

     			<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
     
<?php 
				$count = $count + 1;
				
				if ($count == $myCount) { echo "</ul>"; }
				
		endwhile;
	
	wp_reset_postdata(); // reset the query
	
	endforeach; 

	wp_reset_postdata();

}

?>