Hmm, this was prematurely marked as solved. I gave it thumbs up last week because this provides > 50% of the answer in the sense that it says "the six sensors from that API call are these six sensors here".
But it doesn't say which sensor is for which thing (controller, canister, etc.) so I didn't accept it as solution.
Anyway, this is fine, but I'll post the remainder of the answer once I find it.