Guest, your post indicated that I made a made a good guess from "ethnology" that you did not want social work as such and might be interested in continuing to the doctorate level. I also take it that you have completed a batchelor's program at a good school.
Fretless gives good advice; a school with a good program in cultural anthropology (perhaps social studies-international studies minor) would, I think, be what you are hoping for. If you intend to do research, a doctorate is necessary and it is at the Master's level that you make the contacts that get you the teaching assistantships and scholarships. Getting a scholarship for Master's level may take a lot of work- Apply to several and be prepared to take second or third choice. Once you have a Master's, getting support becomes easier- you have the credentials and the faculty support.
All three schools you mention have excellent reputations and would provide the coverage you require. Get their course catalogues (some of this possible on line) to check on professors, specialties and advanced courses offered. I would add more schools to the list.
I got my master's at a large school, as did my wife, both of us veterans and able to live on the GI Bill. We could not afford the smaller schools, which we would have preferred. Getting support at this level, when one is still expected to take a variety of courses, is more dificult than the next step, the doctorate with a specialty. Our professors at the master's level advised on contacts and provided encomiums. One is definitely not encouraged to stay on for a doctorate (fear of inbreeding). I got a teaching assistantship and my wife (who did not wish to continue, a child had been born) landed a research assistantship at a state survey facility associated with the university. This gave us a roof until, a year later, we were able to get a university apartment for veterans. Housing is always tight at every university. If we had not been veterans, we would probably been stuck with inconvenient off-campus housing for the entire period.

Hmmmn, The University of Hawai'i at Manoa (section of Honolulu), 300 beautiful acres , a truly multicultural institution (in a state only 30 per cent white), offering much in the Pacific Rim field, excellent cultural anthropology choices, Japanese and Korean cooperative projects. Now If I were young again......!