I'm very much not a member of the DSA (FRSO gang represent) but considering it is the largest leftist "party" in America I do feel like I should at least understand the movement and know what factions to watch as opposed to what groups winning control should be seen as a rightward/generally negative shift. The most recent list I've seen was made like a year ago and half of them seem defunct, the DSA website includes a few but mostly non-ideological interest groups as opposed to ideological pressure groups with platforms and national plans.
these are always inaccurate and no one wants to publish one because everyone else would jump down their throats. when you realize there are like 3 separate groups of socdems that call themselves Marxist, you kind of start to understand the problem. (these right-wing factions are b&r (formerly momentum), cpn, and socmaj)