Bug bags work. Your list is good. Just as the pioneers and explorers learned years ago:
quality jerky and home made "trail mix" will carry one far until stable conditions occur.

On lace up boots: make a knot middle of each lace, then thread them equally at bottom eyelets.(Keeps the lace from coming out too far.) Use on my Kennetreks and Maine Hunting Shoes by LL Bean.
Army socks-boots are tough. So is the wool French Army "neck roll". Acts like the neck area of a turtleneck, but can be taken off and used as a
wool skiclava to keep head warm.

A reliable accurate 22 LR handgun- for grouse, rabbits. An S&W kit gun also allows use of shorts and CB caps to reduce noise levels while foraging.

Water purification tablets or device & canteen.
Matches in WP container
Boy scount & sheath knives
Signal mirror

Frankly, what I see most “preppers” doing is getting stuff.

While it can help, what really helps is knowledge and skills.

Buying some jerky is of some, but limited value. Being able to make jerky and the ingredients for making it is much more useful.

What good is a generator if you have no ability to maintain it?

How good is a gun if you can’t maintain it and keep yourself in ammo?

Farming is not easy… it’s a definite skill set.

And so on.

So.

What skills are good to be prepared for an adverse event?

The ability to sew clothes reasonable well, to be able to tan a hide and sew moccasins, to able to have basic blacksmith skills to be able to preserve meals/food.