Here in Hawaii, white rice is the standard starch. We have what we call a "plate lunch" which is a pretty standard local lunch meal consisting of a meat, one scoop of white rice and one scoop of mac salad. Common meats are hamburger steak smothered in gravy, loco moco (hamburger steak with eggs on top), teriyaki, kalua pork, or chicken katsu.
We have a large Asian poplulation, so many of our local dishes also incorporate Japanese, Chinese, and Filipino food. For example, spam musubi, which is sticky rice shaped into a rectangle with a piece of spam on top and wrapped in seaweed. Sort of like sushi.
Saimin is our local version of ramen. It usually contains kamaboko which is a type of fish cake, spam or pork, and green onion.
True Hawaiian food would be kalua pig (pork roasted in an underground oven), lau lau, and poi.
Shave ice is a really popular snack and mochi is a wonderful Japanese snack that locals love.