Here’s a 230W example: https://www.amazon.com/Charger-Adapter-GTX1070-RTX2070-RTX20...

Their still common with gaming laptops like Razor 15’s. It’s ancient at this point, but a friend used to have a dual GPU laptop that used 2 different AC adapters at the same time.

There are some. Thinkpads can go to 135 and if I recall correctly, maybe even 170W.

The bricks weigh as much as an ultrabook, though :-D