The Polestar vehicles are manufactured in China (in addition to being owned by Geeley, a Chinese company)

If you check the vehicle info in the door, they note they're made in China: https://static.cargurus.com/images/forsale/2023/11/04/04/31/...

Yes — the Wikipedia article that I linked says so as well. But Polestar is headquartered in Sweden, and the cars are designed by Swedes in Sweden. It’s a Swedish brand.

Volvo are owned by the Chinese!?

Yes. Geely also own Lotus and started to produce heavy Lotus branded SUVs.

MG is also Chinese.