Gutenberg core blocks list

core-blocks.txt

// Útil para filtros de Gutenberg como "allowed_block_types"

archives
audio
button
categories
code
column
columns
coverImage
embed
file
freeform
gallery
heading
html
image
latestComments
latestPosts
list
more
nextpage
paragraph
preformatted
pullquote
quote
reusableBlock
separator
shortcode
spacer
subhead
table
textColumns
verse
video

hidding-blocks.php

<?php

// Filtro para limitar el tipo de bloques que admite un CPT 'libro'.

function scv_allowed_block_types( $allowed_block_types, $post ) {
    if ( $post->post_type === 'libro' ) {
        return array(
          'core/paragraph',
          'core/image',
          'core/list'
        );
    }
    return $allowed_block_types;
}

add_filter( 'allowed_block_types', 'scv_allowed_block_types', 10, 2 );

@troychaplin , @parmarhardip , a bit late but for anyone else who stumbles here, i use this way to disable the (absolutely insane) list of core embeds inside an editor enqueued script

add_action('enqueue_block_editor_assets', function() {
  wp_enqueue_script('theme-block-scripts', get_template_directory_uri() . '/editor.js', ['wp-blocks', 'wp-element']);
});

wp.domReady(function() {
  const dumbEmbedTypes = [
      'smugmug',
      'wolfram-cloud',
      ...
  ];

  dumbEmbedTypes.forEach(type => {
    wp.blocks.unregisterBlockVariation('core/embed', type);
  });
});

I had to add more hooks for js file. Allows only the 'youtube' embed.

add_action('enqueue_block_editor_assets', function() {
  wp_enqueue_script('theme-block-scripts-unregister', get_template_directory_uri() . '/assets/js/admin-embed-block-unregister.js', ['wp-blocks', 'wp-element', 'wp-dom-ready', 'wp-edit-post']);
});

document.addEventListener("DOMContentLoaded", function () {
  wp.domReady(function () {
    const allowedEmbedBlocks = ["youtube"];
    const blocks = wp.blocks.getBlockVariations("core/embed");
    blocks?.forEach(function (blockVariation) {
      if (-1 === allowedEmbedBlocks.indexOf(blockVariation.name)) {
        wp.blocks.unregisterBlockVariation("core/embed", blockVariation.name);
      }
    });
  });
});