Suburban counties that are bluer than their core anchors?

[Oryxslayer]

Yolo is more Democratic than Sacramento, though it's debatable if it's suburban per se.

Yolo is an intersection county. It's partially suburban - you literally have West Sacramento right across the same-named river from the urban core. Then you have Woodland and other smaller towns which are better conceptualized as where the agrarian Valley reaches around Sacramento to connect more recognizable farmland areas to the north and south. Then there is Davis which is a university town and behaves more like the Bay Area to the west down I80.

All three are Democratic, but Davis is the partisan anchor.

[Oryxslayer]

Anyway here's a legitimate answer: Until the 2020 Election Osceola County FL voted Democratic at a higher percentage than Orange. And this is of course cause Orange has many more moving parts and demographic cleavages than Osceola, and getting them all to move in one direction is harder than in Osceola where a majority of voters are Hispanic and most of those Puerto Rican. And it was more Democratic cause of those internal migrants buying up comparatively cheap homes during the housing crisis. Of course in 2020 this reversed for the same reasons above: both experienced the same trends in voter behavior, but Orange has other non-Hispanic groups that behaved differently.