It is hard to say categorically what sort of food will be unsuitable during a disaster. Canned goods are heavy, dehydrated and powdered foods require water, time, and perhaps somewhat elaborate cooking arrangements, wild foods may not be in season, etc, etc.

The best approach seems to have a bit of each on hand. My preferred approach is to bug in, so I have lots of canned goods. That's OK as long as I stay put or can leave by vehicle. I also have some freeze dried/dehydrated/powdered items, which I regularly consume on backpacking trips anyway, as well as a stock of energy bars and other "MRE" items.

In a prolonged situation, all of the above will be handy at one time or another.