So, I'd actually push back on that and say you will find cities with a variety of "new" immigrants and related community cultures stacked on top of the older immigrant communities that are still there (think your various Eastern Europeans). It makes for a unique mix.
There's a variety of reasons for this I could speculate on, and three of the firmer ones are refugee resettlement (Minneapolis and Somalis, pre-cool Cali and Hmong, Michigan and Syrian refugees), Central/South American immigration patterns beyond the border states, and military bases which tend to show up all over the midwest/west/southeast/southwest (Korean, Vietnamese, German and maybe smaller ones but those stand out).
These communities exist alongside the traditional cultural elements of the city and can often be blocks away. But, the areas tend to look a lot less like Chinatown and more like Flushing - maybe more insular, but still plenty authentic.
Edit: The more I think about this the more I realize I'm probably unqualified to be having this discussion, since I really haven't lived in enough of these places to talk diversity of communities
Yeah I mean I agree with you in theory, but I just haven't seen that in practice. I'm not saying you're wrong - the most likely answer here is that I just haven't been to the places that you're talking about.
All of the midwestern cities that I've lived in have definitely lacked a lot of cultural diversity, even if you drive out to the outskirts of the city where the majority of minorities tend to live (again, in the cities I've been to).
Maybe because the majority of people in these cities aren't as interested in the diversity, so the diverse populations can't really start a business that succeeds since no one (outside of their tiny community) wants to go there?
Or, I'm just wrong and haven't been to the right places
There's a variety of reasons for this I could speculate on, and three of the firmer ones are refugee resettlement (Minneapolis and Somalis, pre-cool Cali and Hmong, Michigan and Syrian refugees), Central/South American immigration patterns beyond the border states, and military bases which tend to show up all over the midwest/west/southeast/southwest (Korean, Vietnamese, German and maybe smaller ones but those stand out).
These communities exist alongside the traditional cultural elements of the city and can often be blocks away. But, the areas tend to look a lot less like Chinatown and more like Flushing - maybe more insular, but still plenty authentic.