I'm trying to build a tool to allow users to update wordpress content based on suggestions.

I'd for it to have AI capabilities like rewrite and grammar check.

I'm finding it very difficult to find an editor that maintains the Gutenberg HTML blocks, besidies for Gutenberg. But there are almost no open source examples of a full standalone Gutenberg implementation and it is especially difficult to see how I would add a "Higlight to rephrase" feature.

Any help would be appreciated!

I've tried novel.sh/tiptap (uses json, hard to make it use HTML), Lexical (very difficult to understand how it works. I can even find how to export sample code from the playground)

My tech stack is nextjs.