I think you’re a bit confused here, Democratic Centralism and the Mass Line are organizational principles. They are primarily for party structure, not only mass societal structure, and Liu Shaoqi’s work is on behavior within orgs. Any union, political party, etc. can and would benefit from learning these and discussing them.

Fair enough, but I don't believe mass parties can be built anymore without a mass society, so it's stuff I don't really read about because again, it's not really actual or usable.

Is there something specific you are asking about? Like, how to file for specific legal status or something?

In other spaces like the ones I would like to find on lemmy, the areas that get discussed are stuff like organization design, process design, software and software practices, facilitation, mediation, consensus building, effective communication and so on and so forth. You know, the stuff you need to build an organization that is effective in the world.