Your 1 year old buck is a black magpie Harlequin. Whether he's purebred or not is hard to say, Harlies are more or less commercial in type but often are rather lacking in the meat department (I ought to know, I've been breeding them for 20 years!) The big-headed doe is probably a lionhead, or at least some sort of lionhead cross. Whenever acquiring new stock (especially animals from unfamiliar sources), keep your eyes and ears open for any sign of a rabbit not doing well (sneezing, runny eyes, diarrhea, loss of appetite, etc). If you see anything that looks "off," jump on it quickly!
Good luck with your new rabbits!
Good luck with your new rabbits!