I very much like the idea but (a) don't feel qualified to volunteer (b) am not overly inclined to and (c) am not convinced exactly what I think you are asking would make a suitable canonical - that is be a single answer to a large number of questions we see here.
But a slight change in focus might work. Rather than attempting to be an answer to all of the myriad of subtle differences in scenario that are possible, rather describe what details may be required to give a 'proper' answer, preferably with reasons why. So for example:
We need to know which airport (even within USA the rules vary ...).
We need to know whether you want access during a layover/stopover or would prefer not to be burdened with luggage then.
We need to know how long is your layover/stopover (because duration can make a difference ...).
We need to know which airlines (because of interlining ...).
We need to know whether checked-through (already/possible ...)
We need to have some idea when you are flying (because the rules sometimes change ...).