I actually know of one!
The Inazuma Eleven games have tons of
playable characters. From what I gathered,
there were about 1000 in the beginning
with more than double that in the most recent
game on the 3DS, all with unique stats,
attributes, elements and move pool.
The next game is set to release on Switch
in spring of next year and is being developed
by Level5, the guys behing Yokai Watch.
Check it out if you like, maybe you like it.
Tough besides this, the strength of a console
says only so much about a game. Pokémon
itself showed in the past the power of
optimization, and that Gamefreak is bad at it.
Sadly there is reason to believe that
this will not happen... The Pokémon Company
has Gamefreak on a tight schedule - the
reason for the yearly releases. It's possible
they are already working on the next games,
as they have done before and these games
having reached gold standard.
(I think that's what it's called.)
Doing the other Pokémon costs time they are not given.
As an aspiring game designer, I believe
that this is not the state Gamefreak wants
their product to be in, and that they were
cut off. After all, Junichi Masuda's statement
was not much of an official one, not even
getting shown to the especially furious japanese
audience, and the lack of information on
this topic suggests this was not a planful decision.
The decision was the Pokémon Company's, not theirs...
This is no one's first time.
Not the consumer's, who know full well what to expect from a Switch title, as even simple games like... Ring Fit Adventure (is that what it's called?) have a better presentation, nor the high-ups that believe to be able to plan their future long in advance.