The entry list for each JGP is released individually, at a set number of days before that JGP. There's no big masterlist like there is for Senior GP.
That said, here's a link to
the ISA's website listing SOME of their JGP nominations.
Czech Skate:
Pair - Ekaterina Alexandrovskaya / Harley Windsor
(Sub – Jessica Rotondo / Ryan Dodds)
JGP Japan:
Men – James Min (Sub: Charlton Doherty)
Ladies – Katie Pasfield (Sub 1: Emma Carr / Sub 2: Yancey Chan)
Dance – Matilda Friend / William Badaoui (Sub: Jessica & Charlton)
JGP Russia:
Men – Giuseppe Triulcio (Sub: James Min)
JGP Estonia:
Men – James Thompson (Sub: Giuseppe Triulcio)
Ladies – Amelia Jackson (Sub 1: Holly Harris / Sub 2: Serena Xu)
Dance – Anastasia Ozerova & Nicholas McCreary (Sub: Matilda & William)
Pair – Ekaterina Alexandrovskaya / Harley Windsor (Sub: Jess & Ryan)
JGP Germany:
Men – Charlton Doherty (Sub: James Thompson)
Ladies – Holly Harris (Sub 1: Amelia Jackson / Sub 2: Lucy Sori Yun)
Dance – Jessica Palfreyman & Charlton Doherty (Sub: Courtney & Beau)
Pair – Jessica Rotondo / Ryan Dodds (Sub: Ekaterina & Harley)
So there you go. I am a bit surprised because I didn't realise Harley was still young enough for JGP - but then the man of a pair can be 21 as long as the lady is under 19 by July 1. Good to see both Harley and Ekaterina and Ryan and Jessica getting outings here. Looks like the love is being spread in the ice dance, as well. I see Charlton will be double-dipping, which is always an interesting challenge.
Please note that this list is not complete for all the JGPs.