Question: Is there such a thing as a "proletarian novel?" What do you call Soviet fiction in general? What genre were Soviet writers writing about besides just the usual monikers such as "sci-fi"?

I'm deeply curious about this. I heard that fiction with communist messaging is called a "proletarian novel" but I'm honestly not sure. Maybe I can find something on ProlesWiki about this? I'm trying to wrap up the current session of university as it is so I'll pay a visit there some other time. Anyone else interested in this? I knew a writer friend that told me that Soviet fiction was basically its own genre and wouldn't just be, or shouldn't just be, called "magical realism" or "science fiction." Anyone else know more about this?