I mean with this Pokémon like Incineroar is typed in French as Félinferno. And Solgaleo still keeping the same name in French, and English. I hope that makes sense.
That's all! SeeYaLater!
According to the rules page
If the answer calls for a long list or a huge amount of detail, then it is fine to link to another site
So a lot of Pokemon change their name in french, so here is the list.
There are also quite a few that re the same in english in french, but that list should help your cousiin