All Gutenberg default blocks listed

gutenberg-default-blocks.txt

// These need to be enabled to save reusable blocks and templates
'core/block',
'core/template',

// Common blocks
'core/paragraph',
'core/image',
'core/heading',
'core/subhead', // DEPRECATED Subheading
'core/gallery',
'core/list',
'core/quote',
'core/audio',
'core/cover', // Previously 'core/cover-image'
'core/file',
'core/video',

// Formatting
'core/table',
'core/verse',
'core/code',
'core/freeform', // Classic editor
'core/html', // Custom HTML
'core/preformatted',
'core/pullquote',

// Layout Elements
'core/button',
'core/buttons', // New in 5.4 (https://wp.me/p2AvED-kKc)
'core/columns', // Columns, previously 'core/text-columns'
'core/media-text', // Media and Text
'core/more',
'core/nextpage', // Page break
'core/separator',
'core/spacer',

// Widgets
'core/social-links', // New in 5.4 (https://wp.me/p2AvED-kKc)
'core/shortcode',
'core/archives',
'core/categories',
'core/latest-comments',
'core/latest-posts',
'core/calendar',
'core/rss',
'core/search',
'core/tag-cloud',

// Embeds
'core/embed',
'core-embed/twitter',
'core-embed/youtube',
'core-embed/facebook',
'core-embed/instagram',
'core-embed/wordpress',
'core-embed/soundcloud',
'core-embed/spotify',
'core-embed/flickr',
'core-embed/vimeo',
'core-embed/animoto',
'core-embed/cloudup',
'core-embed/collegehumor',
'core-embed/dailymotion',
'core-embed/funnyordie',
'core-embed/hulu',
'core-embed/imgur',
'core-embed/issuu',
'core-embed/kickstarter',
'core-embed/meetup-com',
'core-embed/mixcloud',
'core-embed/photobucket',
'core-embed/polldaddy',
'core-embed/reddit',
'core-embed/reverbnation',
'core-embed/screencast',
'core-embed/scribd',
'core-embed/slideshare',
'core-embed/smugmug',
'core-embed/speaker',
'core-embed/ted',
'core-embed/tumblr',
'core-embed/videopress',
'core-embed/wordpress-tv'