Actually they look more like Hy-Lines to me but it really makes no difference. All this type of bird, red sex links, are very much the same. You will be delighted with them no mater what their breeding.
What they are not is a RIR and Leghorn cross. A Leghorn is a white egg layer and would never be used in a cross for birds producing brown eggs as the shell color would be very diluted.
Actually these birds mothers have the color pattern of a very pale Delaware and the fathers are like a very weak colored New Hampshire. The parents do not, however, have a body conformation simular to the aforementioned breeds. In other words the parent stock is of no recognizable breed.