you have a lot for athleticism and movement, but it is far back. some names for above average movement: Green Dancer, Nijinsky (GD was one of the most reliable ‘passers’ of Nijinsky’s movement IME), Sword Dancer, Timeless Moment (son gilded time throws better than average movement), Grey Dawn (thru Blue Larkspur) and Irish Castle.
When I say movement killers, I mean horses that move average or below average - when I think of an average mover I think of a horse like this (not mine, random clip pulled from YT): click
One thing Seattle Slew really consistently passed on (besides his handsome color) was his average almost-sewing machine trot. Almost every horse I saw by him moved that way. I think SS contributes heart and soundness (rideability) but does not improve movement. His most prolific son, AP Indy, seems to pass on a similar but usually better trot likely in part thanks to the linebreeding to Bold Ruler & Princequillo. But AP Indy’s best thing is his dam, Weekend Surprise - she is tail female to a superhorse named Lassie Dear, who’s mother Gay Missile is found in many UL event horses.
For Septieme Ciel, hopefully having GD/Nijinsky damside thru Maximova came thru more than SS.
Pine Bluff and Danzig (father & son) are another family I don’t think contributes movement; Danzing definitely contributes jump and attitude but I don’t typically look to him as a source of movement in the pedigree.
Irish Tower is a really nice horse to get in a pedigree, and he almost consistently has very, very good jumpers – but I don’t see many of them with dressage movement. Hunter movement is a little different, but the basic premise is the same - supple & suspension. You get the best movement in a TB IMHO thru Hyperion, Blue Larkspur, and Gay Missile.
The plus side is all of the stallions I mentioned, while maybe not the most brilliant horses in terms of movement, contribute so much more than just movement to the equation.
