An intern could rewrite that over the weekend. What's your point?
I don't quite understand your question. ygra asserted that the Windows network stack was taken from BSD. This was never true and was kind of a pernicious rumor for a long time. I just assume Greg Lehey's word on it is enough for most people.
There were a few little odds and ends that popped up with BSD license notifications over the years, like the ftp client IIRC. As you say, little utilities that don't amount to much. What is YOUR point?
I'm pretty sure the ftp.exe client program had some BSD bits at one time. There might have been some small things like that. Nothing big.