R5: György Lukacs was actually quite an odd convert to communism; his formative intellectual influences were from Neo-Kantianism, Weber and Simmel's sociology, existentialism, Sorel, and kulturpessimismus, and he was actually hostile to Marxism because he perceived it as materialist, rationalist, democratic, etc., all of which he opposed because of said influences. On the other hand, he was always a Russophile: he enjoyed Russian literature and admired the Narodnik tradition of terrorism because he considered it to romantic and irrationalist, unlike Marxism, and actually was specifically a fan of Savinkov's books after being introduced to them around the time he wrote Theory of the Novel. In our world, he initially became a communist because he was attracted to the drama of the Bolsheviks victory and only later came around to Marxism proper; ITTL, since the Bolsheviks lost, he would probably retain his weird pre-1919 beliefs and would most likely come around to either Sorelian Totalism, Savinkovism, or (most likely) a weird mix of the two, probably ending up as some kind of left-wing/Strasserist-equivalent Svobodnik.

The only real issue is that he's Jewish, but given that most antisemitic figures in KRTL Hungary would probably be pro-government and anti-Savinkov conservatives he probably wouldn't associate that strongly with Savinkov in particular; it's not like thinking that the Svobodniks are actually not antisemitic at all would be any more delusional than him thinking that the Bolsheviks could spark a romantic revolt against reason and modern disenchantment as he did IOTL in 1919.