How to understand process priority in android?

Question

Android

Here https://developer.android.com/topic/performance/me... it is described how memory allocation works in android, including that background applications are killed first, depending on how long they have been open, but after following their background list I noticed that applications sometimes keel far beyond the time of work. Is there another dependency on cached pages as clean or as dirty? like if the application is often saved in storage and it will crash faster, and vice versa if there are no autosaves, then it will hang in the background longer. I apologize if this is a dumb question, it's just that there are deeper links that do not open in the document

Answer 1

The one above is killed first.
Horizontally - depending on oom_adj_score .