No, we don't all sound like Major Winchester, although some do. Harvard students and alumni/alumnae are from all over the United States and all parts of the world. For every student with a name like Godfrey Cabot Lowell there are dozens named O'Connor, Russo, Cohen and Wong.
I am forced to admit that Mr Obama is an alumnus, but of the Law School, not Harvard College. Please do not hold that against us.
Our hockey team is drawn from a wide area. One difference is that most come to Harvard directly from high schools/boarding schools. Based on programs that I have read I gather that at many schools the players have spent a year or two playing hockey between high school and college. Like all the Ivies Harvard does not have athletic scholarships and is constrained by the Academic Index (AI). To briefly summarize, the AI is calculated based on GPI, class rank and SAT scores. The mean AI of all entering varsity athletes must be within one standard deviation of the mean AI of the entering class. Some hockey players go on to careers in hockey (such as our current coach, Ted Donato (H '91) ) others go into many other fields. The current head of state of Canada, Governor General David Johnston (H '63) , was an All American at Harvard. I understand that at 73 he still skates like the wind.
I am forced to confess that I know little of Omaha, Nebraska. I do know my grandparents, in 1909, went there for their honeymoon. I also recall that in 1994 my (then but now former) wife was a naval officer and spent two weeks TDY at USSTRATCOM at Offut AFB in February. She often described those weeks as the longest year of her life but that was not due to the people in Nebraska but the fact that a much loved aunt was dying in Boston when she was at Offut.