Here are a couple of links that do a pretty good job of identifying various styles.
http://www.shugenkai.com/astyles.htm
http://www.shugenkai.com/newschools.htm
http://www.aikidojournal.com/new/art...p?ArticleID=29

This is what I provide to prospective students who ask about such things, or come from one of the styles listed.