Despite a lull following the end of the Cold War, survivalism has gained greater attention in recent years, resulting in increased popularity of the survivalist lifestyle, as well as increased scrutiny. A National Geographic show interviewing survivalists, Doomsday Preppers, was a "ratings bonanza" and "the network's most-watched series", yet Neil Genzlinger in The New York Times declared it an "absurd excess on display and at what an easy target the prepper worldview is for ridicule," noting, "how offensively anti-life these shows are, full of contempt for humankind."
Each type you listed (save a couple) will have its uses in a community (group if you will), generally having a small trusted group with each having several skills in the various fields (prepper, homesteader, and survivalist) I believe would be an effective team, though as each group works together would it not be best to ensure that each has overlapping skills in case of injury, death, or other reasoning they can not fulfill their duties?
Napoleon was fond of saying that an army moves on its stomach. Well that’s also true for hunters, mountain climbers, backpackers and campers as well. If you find yourself in an emergency situation proper sustenance is even more crucial. The MalloMe 10-piece mess kit is survival gear that allows you to prepare the kind of meals you need to stay in the game. Everything is here from a 1 liter non-stick pot with cover to 2 bowls, stainless steel spork, wooden spatula, drawstring nylon carrying sack and more. Don’t let events get the best of you. Stay well-fed with the MalloMe survival gear mess kit.
To me, the best option is to store emergency food. How much? If you have none, store enough for a few days. If you have enough for a few days, get enough for a week. How much you store depends on what time frame you think you're at risk for having to be completely independent. The early settlers of the southwest liked to store enough food for a whole year and still do to this day!