According to this, Detroit is the most segregated city in America, and Chicago is fourth:
https://belonging.berkeley.edu/most-least-segregated-cities
If you widen the lens to entire metro area, Chicago is #2, and Detroit is #4:
https://belonging.berkeley.edu/most-least-segregated-metro-regions
They measure on a census tract basis, which neighborhoods like Humboldt contain maybe a dozen or two. So it’s possible that individual tracts may reflect a high degree of segregation, but when you add them all up, they paint a slightly different picture overall. I can see where that could be true of Humboldt specifically.
I can also see where neighborhoods like mine and yours could be as integrated as they are but when they are added to all the other census tracts in the city or the metro area, which may be overwhelmingly segregated, it might not be enough to significantly bring them down the lists above.