Allergy?
It has not been proven, but in general people with a cat allergy do not react allergic to the Ragdoll, the coat structure is different, the ragdoll has no undercoat. As a result, they also have much less to no dander. We have had a family visit twice now who are said to be allergic to cats, however they had heard that the Ragdoll was different and that they might not be allergic to it. She wanted to try it out.
They came to visit a few times and petted and cuddled a lot "it was a miracle" they did not get an allergic reaction from our cats.
I also personally have a severe allergy to the European Shorthair in particular and fortunately I do not react to our Ragdolls at home.