This site ( core.wp-a2z.org ) catalogues the blocks delivered in WordPress core.
Other subdomains catalogue the blocks delivered by those plugins.
See the WordPress blocks reference for a full list of the
core-embed blocks as delivered by Gutenberg.
The reference lists blocks delivered by WordPress plugins, including those delivered for WooCommerce, Jetpack, and WordPress SEO.
- The block list is up to date for WordPress 5.3
- The Gutenberg plugin contain some new blocks that are not yet in core.