There was a whole lot more than Top Fuel. There were various other heads up and bracket classes.
The Texas Outlaw Fuel Altereds running heads up were a really fun group to watch - almost as nuts as the Fuel Altereds of the old days. Most of these burn alcohol rather than nitro, though.
The Slingshot/Altered bracket class had quite a showing. I thought this was a really good division of nostalgia cars.