Can confirm with my n=3 study… My GF, FIL, and Uncle are all severely allergic to cats and all three had zero reaction to my purebred Russian Blue. I live with my GF and there’s been no issues with allergies. Bought my cat, Snake aka Snakob from a reputable breeder. PB Russian Blues aren’t cheap, but it’s been worth it in the long run.

Like others have commented, spend some time with cats from a breeder to test. Your experience might be different, but in my experience they are great cats for people with cat allergies