I was able to resolve this issue by creating an array and then targeting the array column of LABEL.
if( get_field('degrees', $post->ID) ) {
while ( have_rows('degrees', $post->ID) ) : the_row();
$showDegree = array();
$showDegree[] = get_sub_field('degree_select');
$foo = implode(', ', array_column($showDegree, 'label'));
$listinfo .= ', ' . $foo . '';
endwhile;
}