I saw (on another thread here) that WJPJ of Humboldt has gone to "country hits of the '90s" or something like that. (The ones that I used to play back then!) I don't know if it has been long enough for '90s country to be considered "classic" yet, but that is about the closest that I have seen. It doesn't look like their signal is strong enough to be picked up over most of Jackson, maybe the north side of the city (three-way area), but that is about it.
Looking at radio-locator.com, one gap that I am somewhat surprised to see in the Jackson area (unless I missed it) is adult contemporary. They have hot AC, and even adult hits, but no AC that I saw. Don't know if radio-locator needs to be updated.