wordpress function to add a new column to admin list view of selected post-type and field

add-admin-column.php

<?php
// yoink: https://wordpress.stackexchange.com/a/379641

// add this to functions.php
function add_admin_column($column_title, $post_type, $cb){
    // Column Header
    add_filter( 'manage_' . $post_type . '_posts_columns', function($columns) use ($column_title) {
        $columns[ sanitize_title($column_title) ] = $column_title;
        return $columns;
    } );
    // Column Content
    add_action( 'manage_' . $post_type . '_posts_custom_column' , function( $column, $post_id ) use ($column_title, $cb) {
        if(sanitize_title($column_title) === $column){
            $cb($post_id);
        }
    }, 10, 2 );

    add_filter( 'manage_edit-'. $post_type.'_sortable_columns', function($columns) use ($column_title, $field) {
	$columns[$column_title] = $field;
  	return $columns;
    });
}

// example using 'coupon' post type and the 'subtitle' advanced custom field
add_admin_column(__('sub title'), 'coupon', function($post_id){
    echo get_post_meta( $post_id , 'coupon_post_subtitle' , true ); 
});