One might ask themselves whether it matters what race you are, as well as other attributes e.g. religious background, beliefs in rel. to spirituality, educational level, social class or standing and so on.
Answer is No; it doesn’t matter in general who you are what you are- the occult doesn’t discriminate in the same way a bullet being fired at you doesn’t, the result or outcome will be the same. Spiritual energy doesn’t care about any of the aforementioned, and neither do spirits; rarely will a spirit turn one down for his ethnicity or otherwise.
So no worries, you can be white (caucasian) and work with spirits from the Voodoo pantheon per example, or with the Islamic Jinn etc, etc; As for the other mentioned attributes, ditto (same applies)- The only time when it’ll play a factor is if you yourself are a magickal practitioner and restrict yourself to a certain thought pattern or are skeptical from the get-go. As with everything, belief in oneself and one’s own abilities is crucial to success.