The obvious 6 to me are Nagasu, Czisny, Gao, Zawadzki, Wagner, and Zhang. Flatt may skip if she goes to college.
Then we are faced with *a lot* of borderline situations. Samantha Cesario (SB 61), Kiri Baga (SB 37), and Amanda Dobbs (SB 49) who all had to withdraw from Nationals. Joelle Forte, Melissa Bulanhagui, and Kristiene Gong (SB 43), who did well at Nationals to finish 9-11. And there's Alexe Gilles (SB 55) and Kristine Musademba (SB 72) who probably won't see the GP next year but Alexe could get on the alternate list with her SB score. The only chance for Joelle and Melissa would be Skate America. The others will be sort of random depending on whether they get picked up from hosting feds.
In my estimation, we'll likely see Vanessa Lam (SB 17) and Yasmin Siraj (SB 15) on the JGP again, but I suppose you never know.