all custom post with categories wise display post

$args = array(
		'public'   => true,
		'_builtin' => false,					
	);

	$output = 'names'; // names or objects, note names is the default
	$operator = 'and'; // 'and' or 'or'
	$postType = '';
	
	$post_types = get_post_types( $args, $output, $operator ); // get all custom post type name
	foreach ($post_types as $post_type) {
		$postType[] = $post_type;
	}
	$taxonomies = get_taxonomies($args,$output,$operator); // get all custom post type taxonomy name
	
	foreach ($taxonomies as $key => $value) :					
		$taxonomy = $value;
		$terms = get_terms($taxonomy); // Get all terms of a taxonomy		

		if ( $terms && !is_wp_error( $terms ) ) :	

			foreach ( $terms as $term ) :
				echo '<b>'.$term->name.'</b><br>';
				$args = array(									
					'post_type'   => $postType,
					'posts_per_page' => -1,
					'tax_query' => array(
			            array(
			                'taxonomy' => $term->taxonomy,
			                'field' => 'slug',
			                'terms' => $term->slug,
			            ),
			        ),					
				);
				
				$loop = new WP_Query($args);
				if($loop->have_posts()) :        							
		            while($loop->have_posts()) : $loop->the_post();
		                echo '<a href="'.get_permalink().'">'.get_the_title().'</a><br>';
		            endwhile;	
		        endif;
		    endforeach;
		endif;
	endforeach;