Anyway you could the Soviet Union dominated by Jews similar to Alawites in Syria
What would a Jewish dominated USSR relationship be with Zionism
what would be the impact on antisemitism
Where the analogy with Alawites breaks down is that the Jews who had leading positions in the CPSU were "non-Jewish Jews." By that I don't merely mean that they rejected Judaism as a religion (along with all other religions) but that they felt no nationalistic or cultural affinity with their fellow Jews. (They rejected both Zionism *and* the Bund's call for Jewish "cultural autonomy" within the USSR). Quite frequently they would indulge in anti-Semitic stereotypes: "Mendelssohn and Rothschild were for the constitution; the laws of the stock exchange, like those of Moses, forbid the consumption of fresh blood."
https://www.marxists.org/archive/trotsky/1907/1905/ch11.htm There is no reason to think their policies would be more favorable to Soviet Jews than Stalin's were--in fact, some of them wanted an earlier assault on the "Nepmen" (traders)--who were disproportionately Jewish.
Of course this wouldn't matter to anti-semites. But for all their "internationalism" the leading Jewish Bolsheviks were well aware that anti-semitism was still prevalent in Russia, and would go out of their way to see that the top positions did not go too disproportionately to Jews. (And this leaving aside the fact that the leading Jewish Bolsheviks were hardly universally friendly with each other--Kaganovich was a Stalinist, Zinoviev and Kamenev were very hostile to Trotsky until 1926 when their reconciliation was basically a product of despair.)
This doesn't mean that Jews wouldn't be disproportionately represented in the bureaucracy. But that was true in OTL as well! And Trotsky explained why: "The Soviet regime, in actuality, initiated a series of new phenomena which, because of the poverty and low cultural level of the population, were capable of generating anew, and did in fact generate, anti-Semitic moods. The Jews are a typical city population. They comprise a considerable percentage of the city population in the Ukraine, in White Russia and even in Great Russia. The Soviet, more than any other regime in the world, needs a very great number of civil servants. Civil servants are recruited from the more cultured city population. Naturally the Jews occupied a disproportionately large place among the bureaucracy and particularly so in the lower and middle levels. Of course we can close our eyes to that fact and limit ourselves to vague generalities about the equality and brotherhood of all races. But an ostrich policy will not advance us a single step.
The hatred of the peasants and the workers for the bureaucracy is a fundamental fact of Soviet life. The despotism of the regime, the persecution of every critic, the stifling of every living thought, finally the judicial frame-ups are merely a reflection of this basic fact. Even by a priori reasoning it is impossible not to conclude that the hatred for the bureaucracy would assume an anti-Semitic color, at least in those places where the Jewish functionaries compose a significant percentage of the population and are thrown into relief against a broad background of the peasant masses."
https://www.marxists.org/archive/trotsky/1937/02/therm.htm Of course this same hatred would exist against a bureaucracy headed by Trotsky himself (or Zinoviev) with the fact that the top man was Jewish simply adding to it. The long-term solution for Trotsky or Zinoviev as well as Stalin would be to train Slavs so they could eventually take over the positions that at first were held by Jews.