1. Black
2. African American
3. Negro
4. 'Of Color' - as in "people of color"
5. Minority
6. Colored
7. African
And, I'm sorry ... but these three simply don't make any kind of meaningful list and all are as offensive as the other, so you can make them 8, 9, 10 in any order you wish!!
Spook
Coon
Nigger