Seedsman white widdow is pretty good smoke, I really really like it, but they are as guilty as most other seed banks of selling polyhybrids under the name of classic strains.
I like seedsman, I highly recommend peyote gorilla and peyote wifi from their catalogue.
Tangent: I try to hunt strains based on characteristics I like and go from there. Going down the rabbit hole is where I learn most of what I know about the history of marijuana and its cultivation. Plus, you might stumble upon some info leading you to the real deal holyfield classic White Widdow, blue dream, chem #4, etc.