Does anyone have a solution on how to integrate/activate a second gutenberg editor within WordPress?
For the moment the Gutenberg editor parses the_content().
What I would like to achieve is a header introduction text where the user can add its own blocks, apart from the default content.
For now there is no as such thing but WordPress is targetting it for future. The Gutenberg editor is the first phase of WordPress in which it embraces the modern JavaScript and there is phase 2 under development. Phase 1 only targetted the content part of the WordPress while phase 2 targets each and every thing like header, menu's, widgets etc. The final result of phase 2 is to edit each section with Gutenberg like behavior.
Phase 2: https://make.wordpress.org/core/2018/12/08/gutenberg-phase-2/
It means for now you are left with custom plugin development or use plugins like ACF.
