I use Wagtail CMS for my sites. It’s the best CMS I have found so far. It’s built on Django. Instead of looking for plugins you just integrate with other services with Python libraries or standard REST calls.

It has something similar to Gutenburg’s block based content editor called Streamfield. Which makes it easier to theme rich content compared to rich text editors. Craft CMS has something similar.

One thing that is missing in Django though is asset digests you find in Rails - anytime an asset like an image updates it should give it a new name so it’s not served by the cache.