What if that long hair girl silhouette is Leaf?
That interesting but why no hat?
I feel like the silhouette is exactly as you'd see them, which is why Sabrina fit the most of the options listed.
Others work too but wouldn't magically be in hyper class, so its weird.
Plus the silhouttes look too defined to be generic, you want generic silhouettes that's the master 8 sihlouette.
I guess until, or by some if the silhouettes are to be confirmed the question is "Would this person truly be in hyper class?" Or rather would Ash battle them.
So let's look at the options
Lucy- Why would Ash battle Lucy, in hyper class against all other possible trainers, I xan't see why they would choose Lucy of all female trainers.
Nessa- While believable, do they really care that much about the galar gym leaders? I mean Bea represents Galar, shouldn't there be more representation of other regions?
Leaf- While not easily dismissed, I'd find it weird they randomly brought her in.
Cynthia- why would Cynthia not be in master class?
Generic- Why not make the sihlouette more blob like, why even hide them behind silhouettes anyway?
Sabrina- Could easily be Kanto's strongest gym leader, the question is do they want to go the Sabrina route for Gengar development or Allister? What fits the journey's style more?
Lillie- I personally don't see how Lillie who is searching for her father and is being engrossed in the search (location wise, sight seeing) would find time to somehow be strong enough to be in hyper class let alone beating Gladion. At best great class fine and that's with Magearna but presumably those Ash battle in hyper class reached that rank before Ash did.