Your Peltiers are probably from the NLR era, early 1930's. However, they could be from a little later and slide into the Rainbo era. Either way they are a Rainbo style of some sort, not a swirl.
Since they have the name of Cross Through, people use that and don't worry about the NLR or Rainbo origin quite as much.
Yes, there are marbles which are called cat's eyes with similar patterns but from different makers. But your Pelts predate the cat's eye era which began with cat's eye imports from Japan around 1950 give or take.