I'm in the same boat as Justin and Brian, having created patterns that mostly rely on our custom Blocks Bundle.

However, I'm in the process of adding core block patterns to our collection of free themes in WP.org directory. And I would love to submit those to the community when they're ready, which should be soon. Having played with patterns a lot recently, I'm really excited to see this directory. I think patterns and FSE are finally going to transform WordPress into the website builder we've always hoped for.

Thanks for sharing Justin!