I watched at least one game featuring each player in the Top 8, and the Top 8 was roughly:
4 Shops (winner)
2 Jeskai Mentor (Diophan in the finals)
1 Delver/Pyromaner (I lost to him in round 1, and he beat Chubby Rain in round 6).
1 Seat of the Synod deck (which I assume is a PO deck of some type)
I might be off by one deck or two, but I think that's what I saw.
I didn't see enough of Chubby Rain's deck in 9th place to know exactly what he played because he got blown out by the Delver player, but I saw JVP, Plows and Paths, so it's a good bet the 9th place deck was a Mentor deck as well.
Jazza, who got 1st in the swiss last week, and scooped since the program gave him all the prizes, landed in the Top 16.