D Phi E is founded as the first non-sectarian sorority xp. At larger schools like U of Maryland, U of Georgia and such, they tend to be more Jewish, but chapters such as my own have maybe one or two Jewish women, because the population is smaller. I can't help with the SDT or A E Phi thing, although I know at UMD they are known as Jewish sororities as well.
As for the D Phi Es at Florida, they are an awesome group of women! Their chapter is pretty big, but then all of the groups at U of F are
I know they won best GPA on campus in like 98 or 99. Fantastic group of women