In reply to Shaun.
Hi Shaun, thank you for your comment. We did indeed use WordPress block editor (Gutenberg). We also built a few custom blocks to meet the needs of our users. These include a custom 'hero' block and an 'image card'.
Content Editors have found the tools relatively intuitive although it's a big change from the old structured wordpress editor. Additionally, user testing has revealed that the longer the tool is used, the more users become familiar and confident with the functionality it offers.