Any Dutch warmblood that meets the minimum requirements, and receives a premium in the official keurings.
Can they be FS?
Yep.
CFS?
Sure
Can they have LS in their blood?
Sure.
Do I have to be its breeder?
Nope.
What about Dutch Draft x Thoroughbred crosses?
As in a previous post, they are not registerable. A horse must also not have any Dutch Draft x Thoroughbred blood in its breeding/5 generation pedigree.