WP 6.1 Theme block category 
Block: Button
Button blocks are not semantically buttons, but links inside a styled div. If you do not add a link, a...
Block: Cover
This is a left aligned cover block with a background image. The cover block lets you add text on top...
Block: Gallery
Gallery blocks have two settings: the number of columns, and whether or not images should be cropped. The default number...
Block: Columns
This page tests how the theme displays the columns block. The first block tests a two column block with paragraphs....
Block: Quote
The quote block has two styles, regular: Gutenberg is more than an editor.The Gutenberg Team and large: Yes, it is a...
Block category: Common
The Common category includes the following blocks: Paragraph, image, headings, list, gallery, quote, audio, cover, video. The paragraph block is...
Block category: Embeds
This post tests various embed blocks: https://twitter.com/WordPress/status/1057136472321613824 Twitter, wide width https://youtu.be/ex8fMxXJDJw YouTube https://www.facebook.com/6427302910/posts/10156380423617911/ https://www.instagram.com/p/BpmueLLgEn_/?utm_source=ig_share_sheet&igshid=1hcxphic7p9e2 https://wordpress.tv/2018/10/14/kjell-reigstad-allan-cole-how-we-made-our-first-gutenberg-powered-theme/ WordPress TV, full width
Block category: Widgets
The shortcode widget: The Archive Widget: The same Archive widget but as a dropdown: The Category widget block has an...
Block category: Layout Elements
The Layout Elements category includes the following blocks: Group, Button, Columns, Media & Text, separator, spacer, read more, and page...