Does sharing some of these dislikes with the alt-right that is the subject of Squirrel’s article make me a “white supremacist”? Or a “nationalist”? Or a member of the “alt-right”?

Yes, it does put you within the general alt-right fold, but it does not mean you are a right wing lunatic.

There is an alt-left, in media articles the one side were 'hate groups' while the woman killed by the car+lunatic is a 'civil rights activist'. Old Testament angel or devil, heaven or hearth. Labels, so many labels and set positions on the politcal spectrum, and the divide and hatred is growing. This is not good for either side.

Other than by and large agreeing, and I'm probably within the alt-left fold, I'd raise one minor thing, brown Turk - Black Algerian. Think of Zidane the footballer. Yes, there are African Algerians, but you're likely not meaning them?