Whether they charted or not, I've heard many of those songs on AC or soft AC radio.
Lots of country artists get played on AC radio. Martina McBride, Trisha Yearwood, and Kenny Rogers all had songs get played on both. AC radio is not genre exclusive. You can hear music from other genres on AC. Willie Nelson's On The Road Again was Top 10 AC (because it was in a movie). So was Always On My Mind. Is Willie traditional country? Good Hearted Woman with Waylon peaked at #16 AC. Is that song traditional country?