This post tests various embed blocks:

The Common category includes the following blocks: Paragraph, image, headings, list, gallery, quote, audio, cover, video.

The paragraph block is the default block type.  It should not have any alignment of any kind. It should just flow like you would normally expect. Nothing fancy. Just straight up text, free flowing, with love.

This paragraph is left aligned.

WordPress 5.0 Beta 2 https://t.co/Bn5QRqAwLN

— WordPress (@WordPress) October 30, 2018

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