Query multiple levels at the same time

Marked as draft because I need to double check myself and see if code can be shared without having to wrap data in a list for the regular <LEVEL>.json. Also, >= + <= should be slower, but I have no idea if it is noticeable or not (my quick tests seems to indicate that no, it is not impacting perf), so I don't know if bothering having two version of the same request worth it.