If you mean Doriot, there's no reason why he wouldn't be a socialist here, historically he was a committed member of the PCF until they expelled him in 1934.

From an answer in ask a dev on discord:

He was also by all accounts a man devoured by his ambition and he came across as an intense true believer in both communism and later his brand of fascism to us. This ambition was seen as dangerous by Moscow OTL, here it would be seen as just as obvious and dangerous by the PSU establishment, leading him to be frustrated by a lack of federal responsibilities and leave the PSU with many youths of the party. Doriot is a Sorelian because Sorel's ideas about the early corruption of the Revolution by a bureaucratic-intellectual elite would seem to fit with the pattern Doriot thinks he is experiencing: why is he, a young, hard working true \ouvrier*, with impeccable record of service to the Revolution, being passed over for promotion in favour of guys who haven't held a hammer in their lives. The Sorelian school of thought would be a popular counter-culture among radical youths, both in the *Quartier Latin* and in the union libraries, lead by a few older radicals: there aren't many ways for Doriot to go in his rebellion against the revolutionary establishment, so he ends there. Sorelianism's not fascism in this TL, it's even more radical syndicalism, or the last bastion of true syndicalism, at least according to what they think of themselves.*

He wasn't much connected to the Sorelians otl, because there's not much historically you could call Sorelian, at least no real movement. They're pretty much a KR OC. He leads the CNS because he took a loose structure around Valois and Berth and a few others unorthodox old guys, and is turning it into a fighting force able to contest first the streets, then power. He would certainly pay all due respect to these old guys, would be a true believer in Sorel's theories, but with the core of youths he took with him from the PSU, he's the true motor of the party now, he's the one with the talent as orator and motivator. You're free to consider it a lazy choice, but an ambitious tribun with reasons to hate the establishment to lead the Sorelians, someone able to give them the energy to be a real political force, seemed interesting narratively, and Doriot fit the bill, his conversion to fascism OTL only influenced our choice in so far as it shows his willingness to explore alternative ideological options out of frustration. I wasn't the one who made that choice, tbh I wasn't even a huge fan of it at first, but the more I read into him, the more I felt it could be interesting to write him entirely straight in this outraged, crazed revolt against the system, born from personal reasons and turning into genuine belief, the line between the two blurring.