I’m a baby Marxist, and I’m not particularly knowledgeable on AES countries. I’ve really enjoyed finding effort posts debunking propaganda and talking about the actual state of them, but dredging them up with the search feature isn’t particularly effective. I’d love to hear what people have to say, especially about China and the DPRK, since those are the ones that come up most frequently.
I like the articles on Prolewiki as a starting point! They all have lots of sources you can visit and verify yourself. For the DPRK, make sure you also check out Korea before the split, the PRK, the ROK, and the DPRK. All of it is necessary, not just looking at the DPRK alone.