Beginner Gardening: Tree or evergreen plant to extend fence vertically, 2 by jojob

jojob wrote:
I'm looking for trees or tall shrubs, preferably evergreen, for privacy. From my deck, which is about 25 feet from the fence, I can see my neighbor's driveway and house. I'd love something that would provide foliage above the fence line and leave the ground clear for planting shrubs and flowers. It would need to be at least 15 feet tall. I would like to keep the oak trees, but part of the area I want to cover is right between the two oaks. I've considered hollies and small magnolias. Any suggestions would be most appreciated. I live in Arkansas, and this area gets sun in the afternoon.