In my experience, if the system is working properly, there's not a lot of room for type-driven inference. We often get a design with very explicit data present, and we want to bring that data in rather than calling on Casual or
Although I feel the automated data generation approach still has value in that it can introduce some variance in the dataset to better represent real-world data, potentially uncovering issues in handling of edge cases in the design/implementation of the UI, that the original conveniently customized dataset that came with the design wouldn't. Though such an approach will likely also need to offer the ability for users to override/customize the generated data on a case by case basis in order to be useful for real world applications, so we'll probably end up with a bit of a hybrid approach at the end of the day regardless.
My question was more about how that persistent dataset in your shared development environment is created though. As that dataset has to first exist for people to query against it.
Curious if that creation process is manual or automated somehow through inference on the types in the schema.