My own zone list game is so weak I once labeled a whole second floor "upstairs stuff" and called it good. Eight months with no callbacks on your Denver house tracks about right, because nobody digs through a panel legend unless they're already hunting for a breaker. The list only saves you when it's accurate, and half the ones I've seen say "lights" for three different zones on two floors. I still print one, but I keep it to floor and room so it matches how I actually labeled the zones. A bad list is worse than no list, in my book.