What streetwear brands do teenage boys & young men wear today?

I’m buys some gifts for my 14-yo nephew outside the US. He likes what’s in black and looks “cool”
now. I’m not a brand name person at all. What are some popular streetwear brands for teenagers and young people nowadays, that are not overpriced and in decent manufacturing quality?
I see this brand on streets a lot that has white abstract flower like patterns. Anyone know what I’m referring to?