Michael Mandel notes in this post that among recent college grads who have employment, the greatest number have government jobs. They probably produce little or no value; what they do may in fact impede the creation of value by others -- but they have what they probably consider "good" jobs.
Another large category is the hospitality industry. Some 33,000 more grads are working in restaurants and hotels. Their jobs probably don't pay very well and could be done by most high school grads, but they ARE producing value.