I'm sorry but citing England and France, two of the most imperialist countries in the world, as examples of where workers managed to achieve victories against capital, is a bit racist to me. The whole welfare in the Global North (for the lucky ones who enjoy it) is built upon unequal exchange with colonial countries. It's imperative to understand that non-internationalist worker movements that don't care about imperialism are the actual bourgeois concessions that you mentioned earlier.
Zapatistas and Rohinya are some of the few examples of functional, more anarchist and decentralised cases of socialist movements that triumphed, and while all of my support goes to them and I love what they're doing, they're regional and small movements for a reason. As soon as the west seems them powerful or big or influential enough to be a threat, I fear they'll be eliminated.
Currently the democratic socialist movements have more control in the Democratic world, global South and global North, than the Leninists do.
Excuse me, which demsoc movements have control in the so-called "democratic world"?
The very second that China, Vietnam, Cuba, or Laos actually allows for free elections between multiple socialist factions, and not just the control of society by a party elite, that's the second I'll consider those leninists more successful than the Democratic Socialists.
Speaking of Cuba, I bring another source: a book by Pedro Ross called "how the worker's parliaments saved the cuban revolution" on how the cuban unions democratically decided the future of the country in an unprecedentedly democratic manner during the so-called "periodo especial" in the 90s when Cuba's main economic partner, the USSR, dissolved overnight. It's a textbook example of what democracy means to me, much more so than multi-party liberal democracy systems in which 100% of the parties in power represent the oligarchic capital. Anyhow, how's your statement that as soon as they have multi-party systems you'll consider them successful, consistent with your claim that you measure success on the material conditions of the working class?