Correct in that they are not a simple White LH x R.I. Red cross but like most large fowl hatchery birds they have Leghorn blood bred into them somewhere to make a more productive bird.
Chris
Golden Comets ain't a R.I. Red /White Leghorn cross if they were then they would be solid White and they would be unable to be color sexed.
Note the breed is a Leghorn not Leg Horn.