Probably the best way to tackle what you are doing is just doing 10 minutes of digging.
First off. Hitler's xenophobia stemmed from his racial hierarchy which placed Aryans at the top – and as the master race. Hitler viewed the world as an arena for the permanent struggle between peoples. He divided the world population into high and low races. When he speaks of Aryans he means largely, a combination of Germans, English, Norwegians, Swedish, Danes, East Baltics, Greeks and Italians. Then there is a hierarchy of Untermensch, which Slavs are part of, but have their own hierarchy, for example Poles are on a higher than Russians. In this context the Jews played a special place in his mind; they were clearly untermench, but were able to "poison" every element of German society (and then later on, the World). I think this thinking stems from the fact that he took the defeat of Germany in WW1 rather badly – on top of the fact that after the emperor was gone Germany was in chaos, and rebellions sprung everywhere. Keep in mind Germany was a very militant society, and it is very diffifcult to accept that such a militant society was able to lose in the war, and many blamed internal stab-in-the-back elements which the Jews were usually part of.
I hate using the suffic -phobia. Hitler didn't fear Slavs. Why would he? They were untermench. Hitler just viewed them as inferior and destined to be dominated by the Ubermench. Hitler wasn't stupid either. He used Jewish Bolshevism as an ideological reason to invade the USSR (despite the fact that they had a non-aggression treaty with them).
And this is where you and many people like you can say things that come off as anti-Semitic. Most Bolsheviks were not Jews. By December of 1917, only five of the twenty one members of the Communist Central Committee were Jews; the commissar for foreign affairs, the president of the Supreme Soviet, the depty chairman of the Council of the People's Commissars, the president of Petrograd Soviet, and the deputy director of the Checka. According to the 1922 Bolshevik party census only 5.21% of the party membership was Jewish. Of the 417 Central Executive Commitee, the Presidium of the Executive of the Soviets of the USSR, and the Russain Republic, the People's Commissars, only 6% were ethnic Jews. Initially Jews over-represented the Bolshevik leadership, but by the time of Stalin's purges in the 30s, Jews had virtually no real presence in the Bolshevik leadership or party. But why were they over-represented in the first place? Historical context. Imperial Russia was horrible to it's minorities, especially the Jews who lived on the Pale of Settlement in Shtetls, and were frequent victims of pogroms. You can make the case that the Russian Empire was actually far worse to the Jews than previous iteration of anti-Semitic violence in Europe (prior to the Holocaust obviously). So when the revolutionary fervor hit the air, of course the peoples most opressed are going to rise up to the occasion.
This is also something I want to comment on which I think all too many people miss. We have the luxury of looking at history from a modern lens. The people who joined up the Socialists and the Communists in the beginning of the 20th century could not have ever imagined it would have turned into horrors of Stalinism, Maoism, and the rest. Similarly, prior to Italian invasion of Ethiopia, fascism as a political ideology was in vogue in the US. Many progressives at the time saw Fascism in Italy as a good model to rebuild society on after the Great Depression. Hell, FDR's flagship program the National Recovery Administration was an avowed fascist who handed to people pamphlets praising Mussolini.
Hitler was never truly "Pro-White", because the idea of "White" in the US and the New World was radically different as to how "race" was viewed in the rest of the world. Neo-Nazis and modern progressives have the same problem as viewing the world in terms of race theory that is predominantly used in the US. For the US "white", "brown", "black", "asian" is so utterly nonsensical I am shocked that we still utilize it in official capacity when it comes to bureaucracy and census data. Hitler certainly would never view Polish, Germans, Russians, Italians, and Irish as racial equals under the umbrella of "White", nor would he view the Japanese, the Chinese, and the Indians as equals under the umbrella of "Asian".
White Supremacy is different than Aryan Supremacy. However, American neo-Nazi adopts the conceptualization of Nazi racial theories into an American context.