That's an individual brand view and it's showing percentages. Automakers are releasing more models across more brands these days. Volkswagen, for example, owns 12 automotive brands and most of them have EV models out now:

https://www.volkswagenag.com/en/brands-and-models.html

So far in 2021 Volkswagen has about 27.8% of the EV market in Europe: https://eu-evs.com/bestSellers/ALL_MONTHLY/Groups/Year/2021

In Q2 only they had 30.1%: https://eu-evs.com/bestSellers/ALL_MONTHLY/Groups/Quarter/20...