Well it's not called 'Trad' for starters, nor 'Preppy'. Reading books teaches you these things. Well worth the effort.
The term that keeps on cropping up is The Ivy League Look. And here is a website on the subject:
http://theivyleaguelook.blogspot.com/
Hardly rocket science is it?
So, I'm a Traditionalist who means it. No new names or new takes for me, if it ain't fucked don't hand it a towel to mop itself up.
The Traditional American Style is, as always, just fine. No longer as big as it was, but still very easy to buy or to have made.
Any other fans?
Count me as a fan as well. As you have said, Trad is a good starting point but the grown ups move on.