I think it might be closer to "here's what I've worked out but I've never actually needed it."
Only a few of the denizens here have actually bugged out and fewer still have stayed bugged out for very long.
Getting involved in SAR will give a significant amount of real world experience, if my history is anywhere near typical.
We would get calls anytime, day or night, for operations that lasted anywhere from a few minutes to some that persisted for weeks.
It was useful to have a bag packed so that you could just pick it up and walk out the door. Sometimes you could "fine tune" it (brew up a thermos of nice hot tea to ward off that 3AM slump), but often you just went with what was in the pack. It was of course a good idea to adjust for the seasons....
After a bit if this, you pretty well knew what was essential, what was nice to have, and what could stay behind.
Currently I reside in a place that could be affected by wildfires. We keep a checklist of priority items to load into the car if we need to evacuate. We have followed the checklist and loaded up the cars on two occasions. Very useful exercise....