Is it true that grunge is the only music style that wasn't stolen from black people?

I heard this and I was wondering if it was a rumor.
Well blacks invented a lot of music and we copied it. I don't think
until recently we started inventing styles of music.
Rock n roll and blues were stolen from blacks. I think they invented
country too but I don't care. Metal is probably ours. Who cares
anyways?