commercially i would pick giselle, cindy and claudia as the 3 biggest models ever.
artistically/high fashion, i would pick kate, linda and daria as the 3 biggest models ever. i dont just judge on the volume but the also the quality of their works.
overall, queen giselle is the biggest supermodel ever!!!!!
If I may use your example, i would Correct it and say:
Commercially best of all time: Christy, Cindy, Gisele
Artistically/hf of all time: the Trinity
But then again, there are numerous notable mentions whiteout whom fashion won't be hat it is, starting from Gia, Paulina Porizkova, Iman, most 90s girls, from 2000s Gisele and Kate Moss.
And from today. Although I don't follow the new girls, I would say Gigi. In terms of super power, super modeling quality of attracting millions of followers, despite the fact that it's all on the social networks, it does remind me of the super power of Naomi, Linda, christy, Cindy,Karen, Helena, etc, etc...to call the shots in the 90s.
Daria, Natasha P and the whole group that came in the early 2000 is hard for me to put in one of throes categories, because they were huge but never the level of Gisele, so I really don't know which group they belong to, in this retrospective.