Hi yid2618
I am also looking for a sem and came across Tiferes, too.
It is not much of info but as far as I know it is quite small (around 50 students this year) and, of course it depends how you define BY-type, but again, as far as I’ve heard, it is.
I don’t know anything about the shiurim but there is one girl from my town that went there this year and is very happy and enjoying it a lot.
Maybe you could get in touch with the campus (Jerusalem:02 582 366) or the office in NY (845 290 0488)for further details.
Hazlocho and kol tuv
keilusch