A
nother option would be: Hitler decides on a different scapegoat earlier in his life? Let's face it: What was "in" and "out" in Hitler's world view always seemed to me as "a tad arbitrary" all in all to put it mildly. He was after all a conspiracy theorist, wasn't he? Was he? Or was he just a guy who knew how to sell conspiracy theory well? Who knows?
Either way: You can still have him go for the at that era popular Social Darwinism / racism in his "teachings" and have him pander this pyramid of races. With (of course) the Germans on top and from there going down to whatever classifications he likes to dream up dow to the "Slavs" and whatever. Let him also sell his idea of Lebensraum and that it of course has to come at the expense of the subraces in the East - not the good (but deluded) brother races like the British.
And he of course will still need to have his big main boogey man. Just: Let him settle on "The Bolshevik" instead. A more social / ideological spin in his prejudice than a racial one. Or rather: pseudo-racial. I mean: Since when are Jews a race please? That's about as convincing as claiming Christians being a race. Or Scientologists. Admittedly: Jews were a super-convenient scapegoat those days. And Hitler tapped heavy into that. If out of convenience if nothing else. But: "The Bolshevik" as the main boogey man also has its perks. It is a much more nebulous term, a "thought crime" so to say to use an Orwellian term. And as such, it can be much easier applied to any opponent or rival. A bit like "reactionary" could be applied to any rival of Mao during the Cultural Revolution.
What kind of POD it would need for Hitler to come to the slightly different conclusion of "Nah ... the Jews are okay. Stupid bunch, like the Catholics, but at least not as annoying like those Witness Jehova (gawd, these guys are a pest) but whatever. ... It is them damn Bolsheviks who are to blame for everything. And they are like a cancer ... blablabla [/rant]"
I do not know. But I assume it would not need much given how whimsical Hitler and conspiracy theorists in general are on such things. I seem to remember his anti-semitism was fostered when Hitler, down on his luck during his early years, was lodging in a not-all-that affluent area of Vienna and regularly observed the antics of some Jewish pimp? Well: Then let him as a POD instead lodge in some other area of town where he is more exposed to the antics of some other hapless minority or (as I suggested above) Socialists / Communists. Jews pass under his radar and instead someone else later features in "Mein Kampf" as the main villain.
Interesting thought: A timeline in which Jews are not prosecuted in the Third Reich, fight in WWII as ordinary soldiers just like in WWI, join the NSDAP and SS like others did, get prosecuted if too left-wing, gay or religious like others did ... and in turn also provide their own share of Nazi criminals to the whole tragedy. Or maybe even more than that out of the urge to blend in because they are aware elsewhere in Europe, the locals are much harder on Jews? Jews maybe even flocking to Germany for that reason? Or collaborating more in Eastern Europe with the advancing Germans and the Germans with them vice versa? "Well, he's a Pole, can't be helped. But hey, at least he is a Jew. Those guys can't be all bad, given how much the other slavs hate them"? I doubt Einstein would have worked for the Nazis and that he still would have emmigrated to the US. But you could end up with creepy stuff like this:
"Anne Frank: The Diary of a Hitlermädchen"