Sushi is the most famous Japanese dish outside of Japan and one of the most popular among Japanese, who enjoy sushi on special occasions.
And as such, it was evolved outside that country, influenced by different Western cultures, especially in USA. That is why many of the different types of sushi have denomination of localities of USA.
A lot of the sushi rolls we’ve become familiar with in the United States are a Western take on Japanese Maki sushi. Even though they’re not traditional, it certainly doesn’t mean they aren’t delicious!