I think there are black blues and then the ones we call white catfish. They are the ones you used to see in Uncle Buds Catfish on the walls. I would say whites and flatheads are close in taste. The meat on a white catfish is almost as white as a crappie. I usually do not eat channels much. When you clean a white catfish your hands will be greasey. They have a lot of fat in there meat. The water in the bucket I put those whites in yesterday had grease on top.
I used to fish KY Lake with a friend and we caught 4 species one day at the mouth of the Duck River. We caught black blues, channels, whites, and one small flathead that got to go back. I have recently just got my old jon boat back on the water with another motor. I have been fishing with friends for years. As soon as I get a side view depth finder, I am getting back to crappie fishing!!!!!!. We went to Old Hickory Dam a couple of weeks ago, and brought home 10 channels one day and 12 a couple of days later. I used to catch a lot of fish and have been out of it in my one boat for several years. I am back to it now. I just built a shed to put my boat in, so hopefully it will be ready to go most of the time. MT