Even as a socialist it is very difficult for me to imagine an actual as described "stateless" communism. It seems to align greatly with what anarchist (and indeed they have overlapped) desire, but how can such a "condition" exist without being enforced?
Anarcho-Syndicalism or Libertarian Socialism where the model is completely decentralized and the means of production controlled by worker-unions, would seem closest to the ideal. However, there still would need to be some established rules in play that prevents allegiances or the eventual return of a monopoly. I just don't understand how "good will" will prevent this.
Ironically, America would be an ideal testing ground for this version of communism, owing to its more individualist nature when compared to authoritarian communism. The federal gov. would be weaker just like in America's early period, with local gov. being much stronger, made up of further decentralized unions of communes. While anarchist/stateless communist would just abolish the overarching fed gov. entirely, I question how one deals with any "rogue" communes or groups unless an agreement or pact is reached between all in this hypothetical society.
It just seems like something that works best on a smaller scale in a different time period. I could maybe see it with full automation and decentralized A.I. as a safeguard in place of an enforcing national government.