Hey, I’ve been vegan for a few years and would be interested in it as well. I’ve mostly read theory on speciesim related to racism (Ko sisters) and related to validism (Sunaura Taylor). I’ve discussed this subject in an informal manner many times in socialist/anarchists movements with other comrades.
I have a book in my to-read since a few months (https://cup.columbia.edu/book/animal-oppression-and-human-violence/9780231151894). I don’t know the author, but it looks like it’s explicitly trying to draw a link between capitalism and animal exploitation. I’ll probably get to it in 1-2 months.
Here is also a comment where I tried to explain informally why I think veganism is worth it and not just an individualist action but a political statement https://hexbear.net/comment/5751548