Out of the – so called – "french intellectual scene" I think 4 people are worthy of reading to this very day by communists: (1) Sartre, (2) Lacan, (3) Lévi-Strauss, and (4) Althusser. Let me break it down for you why.
A fucking humanist existentialist. I personally do not like him, but it should be said that he was the kind of "intellectual" who put all of his efforts into popularizing communism (through philo-books AND novels, making it accessible to a larger crowd). He stressed a lot how this so called individual (we are under capitalism) bears a lot of responsibility and communist potential: existentialcomics.com
Moreover, he provided an excellent critique of "applying materialist dialectics to [everything]" in his Critique of Dialectical Reason – a stab at Engels, seen as an abandoner of Marx! Sartre, mind you, kept supporting the communist bloc even after the infamous 1956 revolution. He was ugly as shit, but had all the pussay he wanted. Nuff' said.
Though sell to a tough crowd, I know! Let me take the Leninist road here. Lacan is useful for a Marxist (and/or Leninist) for the following reason: he was faced with a psychoanalytic institution that basically betrayed ALL of Freud's innovations. For me, as a 21st century Leninist, this reminds me of Stalin's time.
Let me break it down for you before you accuse me of [whatever]:
ALL human institutions become behemoths that eventually betray their original raison d'être: Saint Paul wanted to create the universal framework for Christ's message, and we are left with the Vatican; Elon Musk (lol) "only" wanted us to go to Mars, and look at his institutionalized crowd. I could go on, obviously…
If you take a look at Stalin's (pure!) intentions and contrast it to the results it becomes rather obvious: the institution you found will INEVITABLY betray your original "radical edge". (I need my fellow "tankies" to grasp this point precisely!) If you train cadre (or psychoanalysts, or veterinarians, or whatever) to follow a kind of "scripture", a kind of "101" (to communism, to psychoanalysis), or a step-by-step "guide", your institution will INEVITABLY betray you, since it has been founded to reproduce the already established content – something that might have been initially radical, turned into an "institution for its own".
Mind you, this is not a cheap "Trotskyite" critique! ⛏️rotsky according to this framework got it wrong because he wanted a USSR without the USSR…
Now this dude is something different, you see. All the so called "anthropologists" today – wink, wink, David Graeber – have a basic fetish, so to speak: "MAKE [OCCUPIED LAND GREAT AGAIN]." This theorist saw through all of this bullshit and said: "Sorry, mehr dudes, your so called "civilized west" is not so much different from this "uncivilized" African tribe!"
You must remember Zizek reiterating Strauss' main point from a tribal society that was on the brink of becoming a class-society: the lower classes drew a "map" of their territory as something fractured, while the becoming-ruling-class drew a concentrical map of the area: "What's the problem, LOL?"
Finally, THIS guy!
I have the most respect for him. Let me start with an excursus. I have had the opportunity to be one of the participants of the so called "European Left Forum" annually held in Germany that year. Most of the fucking socdems wanted to praise either
1) Rosa Luxemburg (for some kind of shady anti-Bolshevism – something which she denounced in her later years;)
2) or Lukács for his absolute commitment to "Marxist Humanism!"
Both of these positions are teared apart by Althusser. You see, Althusser is the one and only theorist that can be useful to ancoms and Leninists. He tears apart humanism, he tears apart Gramsci's bullshit (while remaining sympathetic towards his analysis of the superstructure), while he tears apart the so called hegemony of the STATE.
It is this above lesson that should be studied by BOTH anarchists and Leninists. This dude gave us a completely NEW way of understanding "ideology as such" and political economy. This dude, while he killed his wife during a psychotic episode, totally re-conceptualized Marxism…
These niggers like "Zizek" and "Badiou" all came out of Althusser's footsteps. If you are interested in 21st century Marxism you simply CAN NOT AFFORD to leave Althusser out of your studies, no matter of your position (M-L; ancom, etc.)!