Is it normal that i am only attracted to other rajput females?

So I'm of East Indian background, and although that is not an ethnicity, many think that it is. Anyway, my specific caste is Rajput/Kshatriya, which is more of an ethnicity, and within my caste, it is common for male members of the caste to be more darkly pigmented/deeply pigmented than the female members- this is due to sexual dimorphism- similar to what is seen in Persians- where the females are much paler/have less melanin than the males, who have a tannish/olive skin tone. Now I am having issues with this- you see, I live in the United States, where the community of Rajputs is close to none- and so there are no such girls around me. There are other Indian girls, but they are of different castes/ethnic groups, and as such have different facial features and skin tone (darker). For some reason, I do not find myself attracted to these ethnic groups that have more melanin in their skin and have facial features that are not that of a rajput- is this normal? Am I wrong for thinking this way? I can't help who I am attracted to, right? And why does this sexual dimorphism exist so visibly in Indian/Persian ethnic groups, but not in other ethnicities, like White, Black, Asian, etc? Am I racist for thinking this way? Also, this might be a silly questions, but do the females of these groups find themselves attracted to the males of these groups even if they are a different skin tone ? I feel helpless when I think that the females I find attractive will not find me attractive- due to a genetic phenomenon that I have no control over. Am I just freaking out?