Of every 10 you think might be a veneer, the scaler will agree on 2.
Oak Veneer goes by diameter, length, and quality. Generally speaking, it has to be smooth, straight, no seams, no catface, no bird peck, no mineral, and over 13" dia....and the bigger the better. Markets will determine what length you need to cut, here they want 9'6" or 10'6", with 10' preferred