You said it. European culture. PoC have lived in Europe for ages. So, no, you can't say 'European/white', as that erases huge groups of people and is factually wrong.
This is like saying it’s factually wrong to call Indian people POC because it erases the existence of White British people in India.
No, it isn't. British in India were colonizers who sought to divide and subjugate the Indian population. The PoC who live in Europe aren't there to colonize it. They are part of the population and therefore the culture.
Steve Jobs and Justin Trudeau were part of the culture