Caveat - my data includes the top 15 horses on the USEF ranking lists. There are some horses on the ranking lists whose owners elected to not go to the championships this year. Their spots were filled by the next horses on the ranking lists, so I will have to find bloodline info on those horses.
Also - much of my sire/dam/breeder info came from the USEF database. Damsire info came mostly from USDF.