carbon-fields VS wp-graphql-gutenberg

Or... https://github.com/htmlburger/carbon-fields if you want to avoid being obliterated by ACF's subscriptions :)

You're most likely looking for Advanced Custom Fields (here is the PRO version), Carbon Fields, CMB2, or any other custom field manager.

if you don't wanna pay for ACF Pro but still need Repeater Fields, i recommend Carbon Fields. It lives entirely in your code (there's no "Create Field Group" GUI like with ACF) but it does it's job very well.

I submitted an issue on the github here: https://github.com/htmlburger/carbon-fields/issues/970

Here is another one that is has been around for awhile: https://github.com/pristas-peter/wp-graphql-gutenberg

(Another strategy is receiving blocks via WPGraphQL and render them individually via wp-graphql-gutenberg, see e.g. https://www.youtube.com/watch?v=4Ybro_joKMk). Jason Bahl talked about this briefly at WPeDecode conference as well.