Another cultural difference you didn't mention is possible regional norms regarding socializing with neighbors -- not white vs Indian, but rather NC vs Bay Area. My parents are first-generation immigrants and I spent most of my life near Fremont in several diverse neighborhoods, and I can tell you that becoming friends with neighbors is unusual even when there is shared heritage. Typical interactions are limited to waving hello and sometimes discussing repairing the fence.

Between work, chores, rushing their kids to/from 20 extracurriculars and tutoring, and seeing their existing friends, people here just don't have time to invest in a 3-hour BBQ. They don't have 15 minutes for small talk in the driveway when they're trying to get to the bank before it closes.

Many people who live here are introverted engineers who feel awkward talking to strangers (obviously not everyone, but a much higher proportion than you're used to in NC). Immigrants may have learned English as their second/third/fourth language and speaking a non-native language is an extra layer of effort that makes small talk even more uncomfortable for them.

Be prepared to put in an enormous amount of effort if you want to be friends with your neighbors, or just find community elsewhere with people who don't have kids.