Can some one help me identify my ethnicity?

My paternal great grand father was half Black and Creek Indian. He had children by a Korean woman So my paternal grand father married and had children with my paternal grand mother who was Black with and some Creole. My mothers paternal grand mother was a half Irish and Choctaw Indian. and my mothers paternal grand father was Creole. Now my mothers maternal grandfather was Creole and Indian, and my mothers maternal grand mother was Creole. What can I identify my self as...On standardized test etc. I always fill in Black...