Thanks for the initiative!
Lindisfarne is not so big, so it would easily fit into one of the regions of USA that you mentioned. Thus there isn't really any such differences. However, here is Lindisfare's contribution:
Cultural Diversities
Lindisfarne is fairly homogenous as it comes to cultural differences in different areas, mainly because it is not big enough to have isolated cultural developments in modern times. Language is uniformly Lindis with only minor differences in regional dialects. Still there are some regional specialties that can be mentioned.
In the west, the fjordlands and to a certain extent the valleys and also in the northwest, people are considered a bit withdrawn and not so outgoing. Especially the costal population, where the fishing industry is located, is considered remote. In the rest of the country many find it hilarious to tell “Irish jokes” about the westlanders. That, of course, is highly resented in the west.
At the time of the revolution, there were many separate dialects in the west, almost every fjord had its own dialectal oddities, and the western language was somewhat different from the rest of Lindisfarne. A popular movement was created, where the west tried to have their own separate language recognized, the problem was, however, that they could not agree on what that language should be, and so the whole question went by the boards. This is now jokingly referred to as the “language war” by the rest of the population. The westerners are not amused.
The southeast, west of the mountains, and the southern islands, is the core area of the Ikkitora people, the second largest of the two peoples that originally settled Lindisfarne. They are dark haired and have a slightly darker complexion than the Nordain people, the largest settling group. They are generally considered to be more formal and politeness are more important to them. Other Lindisfarnians sometimes regard them as overly formal and finds them somewhat humorless.
Otherwise the mot obvious difference is between city people and the rest of the country. Country people find the city people stuck up and too energetic. City people find the country people provincial and old-fashioned.
Finally a word on the islands. Up till about sixty years ago, this was the poorest area in Lindisfarne and there was almost only a fishing and farming economy. But with increasing tourism in the 1950ies and 60ties, this started to change. Then, in the seventies and eighties, tourism increased even further at the same time as mainlanders started to buy summerhouses and retirement homes in the islands. The influx of capital was not only invested in infrastructure, but in the nineties and later, modern small-scale high-tech industries have been established in the area. The islanders up to recent times were considered poor and backward and was looked down upon. Now the tune has changed, but the islanders still feel quite reserved towards the mainlanders. Their life-style is very open though, and their lax attitude towards sex and family relations is both envied and criticized by the mainlanders.