These were my thoughts too. I think it's a trade name and I think it is being used for a range of similar dark red hybrids.
This is on sale at lots of UK websites but I think they must just all get their 'chids from the same growers who have made up the names.
I love them just the same
I like the second one best and looking at pics of Paph callosum 'Jac' I can see similarities but I don't think it's the same simply because, as you said, it wasn't an expensive division.
I don't have a picture of the folliage just now, I will try and get one later today. They are both mottled but there is a variation in the pattern of the mottling between the two.