How Strong Are Ash's Newest Pokémon Compared To His Older Ones?

Ash has been relying primarily on his newest Pokémon to battle the world

After 25 years, Pokemon's Ash Ketchum has finally become the world's greatest trainer, Entertainment News - AsiaOne

15 Best Pokémon Episodes That Track Ash Ketchum's Journey

At the end of Journey series, Is Ash strong enough to battle and defeat Mewtwo? : r/pokemonanime

10 Differences Between Classic Pokémon & The Modern Series

ADULT ASH FINALLY REVEALED?! Will Pokémon Journeys REVEAL Ash GROWS UP in the Pokémon Anime?!

15 Best Pokémon Episodes That Track Ash Ketchum's Journey

Ash Ketchum becomes the top trainer in the world after 25 years - Polygon

Ash Ketchum Finally Becomes the World's Greatest Pokémon Trainer - IGN

Every Pokemon Ash Ketchum Has Released, Ranked

The Rich History Behind Pokémon's Ash Ketchum

What If? Ash used his Old Pokemon for the Unova League? : r/pokemonanime