We all applaud the new Prodigy documentation as a smashing success and are grateful for the effort you expended on it. Like you, we are middleware providers. As a documentation strategy, we need (1) open source, (2) lowest total cost for authoring and sustainment, and (3) instantly familiar layout/navigation for developers (like Prodigy's). Prodigy/spaCy is already baked into our workflows, so we are aiming for a consistent look-and-feel throughout our documentation.
"Back-room" question (if I may): Is gatsby.js in fact your documentation environment? (8 occurrences of "gatsby" in the View Source tells me that it is.)
Thank you yet again.