BP_XProfile_Field::get_member_type_label()

	public function get_member_type_label() {
		// Field 1 is always displayed to everyone, so never gets a label.
		if ( 1 == $this->id ) {
			return '';
		}

		// Return an empty string if no profile types are registered.
		$all_types = bp_get_member_types();
		if ( empty( $all_types ) ) {
			return '';
		}

		$member_types = $this->get_member_types();

		// If the field applies to all profile types, show no message.
		$all_types[] = 'null';
		if ( array_values( $all_types ) == $member_types ) {
			return '';
		}

		$label = '';
		if ( ! empty( $member_types ) ) {
			$has_null           = false;
			$member_type_labels = array();
			foreach ( $member_types as $member_type ) {
				if ( 'null' === $member_type ) {
					$has_null = true;
					continue;
				} else {
					$mt_obj               = bp_get_member_type_object( $member_type );
					$member_type_labels[] = $mt_obj->labels['name'];
				}
			}

			// Alphabetical sort.
			natcasesort( $member_type_labels );
			$member_type_labels = array_values( $member_type_labels );

			// Add the 'null' option to the end of the list.
			if ( $has_null ) {
				$member_type_labels[] = __( 'Users with no profile type', 'buddyboss' );
			}

			$label = sprintf( __( '(Profile types: %s)', 'buddyboss' ), implode( ', ', array_map( 'esc_html', $member_type_labels ) ) );
		} else {
			$label = '<span class="member-type-none-notice">' . __( '(Unavailable to all members)', 'buddyboss' ) . '</span>';
		}

		return $label;
	}