I embedded a video on this new Gutenberg block blog post (you can even see the caption appearing under step #1): https://www.coursenvy.com/coinbase/
Then for a classic editor blog post example: https://www.coursenvy.com/teikametrics-managed-amazon-ads/ (under H2 “Teikametrics 101” there should be an iframe YouTube embed that appears, which does in the backend editor, just not on the live website)
