I'm no kind of a programmer, but anyboard offers a free, open way to use structured data to put a visualizer on an AppleTV. "JSON Schema describes all options for dashboards configuration."

No idea how to go about getting or structuring my data from HA to do this, but I wonder if anyone else who might just hasn't heard of https://anyboard.io/

Really don't want to/won't use AI to find my answer.