Drupal - Using cache tags for a particular node list

In this case I know two options.

One - Include all node tags (node:{#id}), if doesn't matter if a new node of a particular type was added.

Two - Create and control your own cache tag, and invalidade it when you want.

I'm developing a site that was needed create a term list cache per vocab_id. In this case every time that a term from a particular vocab_id change/add/delete the cache tag is invalided using Cache::invalidateTags($tag_id) then my block will be rebuild.

Edit 1

Example:

use Drupal\Core\Cache\Cache;

function filters_invalidate_vocabulary_cache_tag($vocab_id) {
  Cache::invalidateTags(array('filters_vocabulary:' . $vocab_id));
}

In your case maybe is just change $vocab_id for $node_type.

Starting Drupal 8.9.0, there is a new ENTITY_TYPE_list:BUNDLE cache tag added (see the change record).

So in your case you would simply need to tag our list with node_list:book.

https://www.drupal.org/node/3107058