Aside from the Florida races, ones that stand out to me are:
Washington, AR for Governor
Geary, KS for Governor
Douglas, CO for Governor
Las Animas, CO for Governor and Senate
Jackson, IL for Governor given the bloodbath everywhere else in college counties
Benzie, MI
Grand Traverse, MI
Walz easily winning but failing to retain Winona and Mower in his old congressional district
Carson City and Washoe County getting bluer despite Clark County getting redder
Tim Ryan failing to win Mahoning County, let alone Trumpbull
Shapiro keeping all of Wolf’s 2018 counties, most notably Luzerne and Beaver
Kathy Hochul holding up decently well upstate considering the slaughter on Long Island and erosion in NYC
Virginia Beach being a tie on VA-02
Tony Evers expanding his margin but losing several counties in the process compared to 2018.
Northeast Arkansas has seen some serious, almost Atlanta like shifts. I doubt it’ll come to more then a few state senate seats, but if egregious gerrymandering is avoided I could see AR-3 being competitive in the 2030 (HYPOTHETICALLY). If you look at how the district has shrunk in the last few decades from being the entirety of NW Arkansas to just the Fort Smith/Fayetteville area.