I recently worked on a few client projects that used WP/Gutternberg. I was pleasenetly surprised by how good the dev/editing experience has been compared to when I tried using Gutternberg a few years ago, some amazing work has gone into it. Sadly I still have a lot of uneasiness around what has happened over the past year. For most greenfield projects we have been using Statamic CMS

For those who still need word press, I recommend checking out the roots.io open source collective, they have done great work bringing modern PHP development practices into WP projects. Bedrock and Sage are a great starting point to any project.