Well, I mentioned WSM-FM and KVET-FM. In each case, one company owns two country stations so one leans classic....There are plenty of successful Classic Country stations...
KPLX Dallas
WSM-FM Nashville (WNFN had one really strong book and 650 WSM doesn't subscribe)
KVET-FM Austin (Plays some recurrents but no currents)
KXXY Oklahoma City
KBQI-HD2 Albuquerque
KXBL Tulsa
San Antonio and Salt Lake City each now have two in the format splitting shares
The problem is you have many stations that could very well be Classic Country playing one or two currents per hour as well like KFKF Kansas City, KJJY Des Moines, and WYGY Cincinnati
Nashville: Cumulus owns WKDF (contemporary) and WSM-FM (classic)
Austin: iHeart owns KASE (contemporary) and KVET-FM (classic)
Dallas: Cumulus owns KSCS (contemporary) and KPLX (classic)
Oklahoma City: iHeart owns KTST (contemporary) and KXXY (classic)
Tulsa: Griffin owns KVOO (contemporary) and KXBL (classic)
But as I said, all of these are in Southern/Western markets where PLENTY of people live the Country lifestyle. The only almost-Classic Country station you listed that's not in a Southern/Western market is WYGY Cincinnati. It's co-owned with Cincinnati's top Country station, WUBE. So WUBE is contemporary and WYGY leans classic. And in the latest ratings, WYGY is tied for #17.
So I don't think we can find any successful Classic or Near-Classic Country stations that have good ratings in a non-Southern or Western market. Especially if they are not co-owned with a Contemporary Country station. (Yes, I know Seattle is in the West but I wouldn't call it a Southern/Western market like Denver or Tucson.)