From what I've noticed, white supremacists often have conflicted feelings about Jewish people. On one hand, they're quick to stereotype and ostracize them. On the other, they love using the Jewish community as an example of white people being oppressed based on race (never mind the fact that Jewish people were oppressed for being Jewish, not for being white, and were even considered an ethnic minority as a means to justify the persecution. Also, they were attacked by other white Europeans, not POC). Additionally, racists often assume that all Muslims are anti-Jewish and will cling to that as an Islamophobic stereotype, even if they themselves feel hostile toward Jewish people.

Another factor I've noticed is how they will either say that race isn't the same as nationality/religion or that it is, depending on whether that will further the "white people are oppressed" narrative. This is a pattern that occurs often:

Person: "White people are targeted. Look at what happened to the Irish and the Jews!"

Then the same person will rail against affirmative action, calling it "racism against whites." When told that Irish and Jewish scholarships exist and benefit a lot of white people, they'll backtrack and say, "Well, that doesn't count because those benefits are based on nationality/religion, not race."

Blather, rinse, repeat.