Yeah no. His alola mons had way too much personality to be overshadowed rn.
Torracat was the designated battler and lost personality after his grandpa (symbolically) died.
Lycanroc arguably lost personality after realizing he didn't need to be a Fennekin in regards to getting pissed and embraced his wild side, which only ever showed during battles after he got "over" it.
Rowlet's loafer status isn't that much of a personality, and we all can agree it got really annoying during his final focus episode. Also, he was the Piplup (though thankfully the annoyance didn't show for a long time).
Melmetal has a very one-note personality: a steel glutton. Never did it get a chance to be anything but that.
Nagadel is kind of a miracle, though. Even after evolving into a VENOMOUS ALIEN DRAGON, it retained its silliness next to its usefulness as a fighter (though it only ever got two opponents and was immediately stuffed back into its home, so...).
I think it's safe to say his Alolan team did have personality, but after their arcs? Not so much anymore. A majority of them peaked and there wasn't more. Hell, from the glimpses we got, Torracat became a copy-and-paste double of Kukui's Incineroar...and he was very unlucky on showing his new self because there weren't enough episodes left.
...Though, honestly speaking, I don't see much difference when compared to previous teammates. They all are full of the one trait they are.