BizConstruct is a WordPress theme built entirely with Gutenberg blocks:

• Slider Block
• Features Block
• Counter Block
• Testimonial Slider Block
• Call to Action Block
• Blog Feed Block
• Tabs Block
• Toggle Block
• Pricing Block
• Team Block

The setup of the theme is extremly easy, you just have to import the xml file and all pages are created just as in demo. Then you simply edit each page with Gutenberg editor:

BizConstruct is great theme for developers as well. You can study how each block was developed with the power of Lazy Blocks plugin.