What makes this pedigree unusual

Three of the puppies grandparents were born in the 1990s so many of the dogs in this pedigree, who were very influential in the breed, aren’t seen in four generation pedigrees of dogs born today.

Ace, Am/Can CH MACH Stargazer’s Legend of the West, VCD1, UD, MX, MXJ, OF, CWDX, AOM x @, HIT in Obedience and agility, born 4/1/99

Dora, Ch Mariner Faladora do Miraval, CD, AX, AXJ, WWD, SROM, born 4/19/98

Aramis, Am/Mex CH Roseknoll A Crest of Sunrider, AX, AXJ, WWD, GROM, PWDCA Agility HIT 1997 was born 4/29/1995