Hey 👋 - just keep in mind the the pattern integration is still experimental and is being worked on with the various issues/PRs about this, like patterns in Placeholder, transforms etc..

Latest update is that the experimental scope was removed and blockTypes has taken its place (https://github.com/WordPress/gutenberg/pull/30471). The rationale behind this is that every pattern should be available in theInserter.

See the PR's description for more details.