I used to go to Bloodhorse for this info, but couldnot find it now, but found this on google looking for "off track sires
GL
http://www.handicappingwinners.com/thoroughbetting.htm
Top Mud Sires (wet track sires and pedigrees)
Horses with these names in their pedigree should like off tracks. This includes sires, dam sires, and broodmares. In some cases I've listed horses from similar families. For instance, Grindstone/Birdstone, Machiavellian and Street Cry. Relaunch (In Reality) is one of the most famous mudders so I also have other horses like Bertrando and Officer on the list, because they are from the same line:
Afleet
Air Forbes Won
A P Indy
Awesome Again
Bertrando
Birdstone
Blushing Groom
Boundary
Broad Brush
Carson City
Cee's Tizzy
City Zip
Clever Trick
Conquistador Cielo
Cormorant
Crafty Prospector
Cure The Blues
Danzig
Dehere
Deputy Minister
Distorted Humor
Dixie Union
El Prado
Elusive Quality
Empire Maker
Fappiano
Forty Niner
Gone West
Grindstone
Gulch
In Reality
Java Gold
Kingmambo
Lord At War
Machiavellen
Malibu Moon
Memo
More Than Ready
Mr Prospector
Not For Love
Nureyev
Officer
Polish Numbers
Pulpit
Quiet American
Rahy
Relaunch
Sky Mesa
Skywalker
Smart Strike
Speightstown
Street Cry
Storm Cat
Thunder Gulch
Unbridled
Unbridled's Song
Valid Appeal
Valid Wager