The school is tennessee if you were wondering. The website hasn't been updated with some of the newest faculty, however.
And just for the fun of it, I just pulled another program from the rankings randomly. Georgia state (both graduate degrees offered and around 30k students as well) does not have many faculty members from top 20 universities. Only two are from top 15 universities, one a 1977 phd from Chicago (so this doesn't even remotely factor into today's placement rates).
I suppose we could randomly pull more middle of the line programs, but I'm not sure it's worth the time. I think this top 20 program or bust beief is a myth, perhaps created by the top 20 themselves. Of course the top 20 may rarely hire outside of themselves, but who in the hell cares? I'd be perfectly fine attending or teaching at a school not in the top 20.