You can still find lots of Hyperion lines relatively close in Australia through Star Kingdom and in Europe through Owen Tudor and Aureole and many other Hyperion sire lines. Blandford is everywhere. In the US, primarily through Nasrullah and mares. You can still find Nasrullah close up here and he is a line that is seems to be essential to US sport TBs. He’s almost gone as a sire line, though. Hyperion is golden for movement.
As to Mr. Redoy, he’s Gray Dawn (excellent) and Pocket Ruler (excellent). Nirgal is also excellent. The rest of the lines in the third generation and back of Adversary Miss have all proved themselves with sport horse descendants.
The problem with TBs being limited these days to track bred horses is that the lines that were so prolific in sport are farther and farther back, with the horses selected to bred that are commercially (sales) attractive to racing. The turfy, stamina lines are few and far between in the US. But Europe, Australia and New Zealand have them in spades. South America, Eastern Europe and South Africa have traditionally had interesting lines for sport, but shuttling is beginning to limit their preservation potential.
Danzig is certainly a well proved “modern” sport line, at least for eventing, although he comes with the possibility of unsoundness. There is a lot more Danzig available in the rest of the world than here, thanks to shuttling.