What dimension of genetics? Race is not genetic. If you try to cluster people by genetic similarity the end result does not look like people's idea of "race" at all, and different (even closely related cultures like the UK and the US) have different classifications of race. http://pietersz.co.uk/2023/08/racism-culture-different
In the days of racial science (so up to the 1950s or so) some east Africans and South Asians were classified as "caucasian". Textbooks and encyclopedias from the time say so.
Race is not highly correlated to religion. Christianity is followed by numbers of Europeans, South Americans, Africans, and Asians. Islam by semitic, African, South Asian, South East Asian people. Buddhists are most commonly, South Asian, SE Asian or East Asian - still multiple different "races". The same with cultures. I do not see how race correlates to politics at all. There are weak correlations with culture and language, very weak within countries.
"Race" as used in this sense is almost uniquely an USA thing, exported to right-wing movements elsewhere.
A white USA citizen will have more in common culturally, religiously and politically with a black USA citizen than any white European, Australian or New Zealander.
People of course prefer others that share their language, culture, religion and politics. Race is often highly correlated to those.
To ignore the dimension of genetics is to willfully blind yourself to reality.