Summary: My experience of hundreds of hours of research has taught me that it can't be overstated how much EA has underestimated the value of information to learn on the subject of socialism. A piecemeal review of only one kind of socialism would be misrepresent and limit how much EA can learn. The only adequate representation would be a review of how liberalism, socialism and utilitarianism have all fundamentally shaped each other over 200 years. It may be that can only be achieved through something like a book-length work a researcher receives funding to work on full-time (or maybe part-time).

I volunteered a couple years ago to take a dive into socialism in relation to EA. I didn't specify how deep a dive it would be because I didn't know how deep I'd have to go. It was the deepest dive I've ever taken.

I've learned much but I haven't published much in the ways of summaries of what I've learned. Why I haven't is because it has been too hard to prioritize what information would be most valuable for the EA community to learn from.

I've thought about doing an AMA.  Yet I haven't because I've felt it'd be almost futile. I expect most others in EA don't understand the relevant subject matter well enough to know the right questions to ask to get the most value out of the information. Even for those who do, I'm not confident I'll know how to answer their questions in a way that adequately transmits the full value of the information.

The most relevant lesson I've learned about socialism in relation to EA is the whole community has underestimated how much there is to learn. I anticipated what I'd learn worth presenting to the EA community could be summarized in only one or a few articles on the EA Forum, like those written on neoliberalism, or the couple shallow overviews there have been of Marxism as the primary approach in history to what's called 'scientific socialism.' 

Writing a comprehensive review of only one kind of socialism in a piecemeal way would be of limited value because it would not show the far greater value of a whole body of knowledge. To cover as broad a topic as broad as the relationship between EA and "capitalism" or "socialism" would fit better in a book. Why is that liberalism and socialism, the two predominant modern ideologies, and utilitarianism, the main precursor to EA in history, have all dynamically shaped each other for 200 years. 

The social, intellectual and political history that shaped EA can't be understood without understanding that set of relationships. It has all reframed my own understanding of EA as much if not more than anything else I've ever learned. It's to the point that an adequate review may only be feasible by funding someone to do the research.

Cool list! I wrote a few other social movement case studies not on this list when I was working at Sentience Institute.

(I think they're more relevant to the farmed animal movement than to the effective altruism community but if this was an intentional rather than accidental exclusion, I would be interested to hear reasons why SI's anti-slavery and Fair Trade case studies merit inclusion here but the others don't.)

Anti abortion movement: https://www.sentienceinstitute.org/anti-abortion

Anti death penalty movement: https://www.sentienceinstitute.org/death-penalty

Prisoners rights movement (less relevant, IMO): https://www.sentienceinstitute.org/prisoners-rights

Additionally, you highlighted the anti-nuclear movement as worthy of further study. The focus was on the proliferation of nuclear power, but J (another former SI researcher) wrote a cool case study report which includes some interesting info about the anti-nuclear movement: https://www.sentienceinstitute.org/nuclear-power-clean-meat

Re antislavery, there are a few more sources on this by EAAs. 

I also found Social Movement Lessons from the Fair Trade Movement interesting to read

The field of "technological assessment" could also be a good case study.