What actually is a 'buttermilk biscuit"? It just says use ready made ones, but we don't have those here.

Am I right in remembering that they're something like a scone?

Whenever I've seen pictures of US style chicken and dumplings, the dumplings always look fairly similar to a UK-style suet dumpling, and ultimately we're just talking about different ways of mixing flour and fat together into balls, so I wonder if ultimately it amounts to much the same thing.