As you pointed out, international applicants aren't a homogeneous pool of students and have different motives and objectives in mind when applying abroad. I can only provide my anecdotal personal experience. In my case (and many of my fellow countrymen and women) applying is primarily decided by the the fact that a) the current academic conditions in our country makes it virtually impossible to pursue a PhD in humanities without butchering your academic integrity, and b) PhD funding in our country is a joke, and how the funding works abroad. Most students apply based on these facts. I don't care much about the school ranking, if the POI is a perfect match and the funding is enough for sustaining a normal life, I will take the position in a heartbeat. "Safety Options" are imposed by the ranking themselves since they naturally have a higher chance of granting admission. At the end of the day, I prioritise my options based on the targeted supervisor at the applied school and the funding package. These factors are the tiebreakers for me if I get multiple acceptances, and the ranking comes last. Just my two cents on this matter.