Or, in the absence of any signage, it'd just be "right before left". Relatively common in the outskirts of cities where there isn't one road that has significantly more traffic than the other one.
No, that’s not the same. On a 4-way stop you have to completely stop. Also how I remember my year in the US (I’m from NL) is that the first to reach the stop has right of way, not the “left” one. But I might be wrong on that last one? Didn’t have a drivers license at the time (but was surprised - and turned off from - 4-way stops).