Plus, intellectually speaking movements like the Levellers and the Diggers were way ahead of their time, imho even the French Revolution didn't get to that leve

Plus, intellectually speaking movements like the Levellers and the Diggers were way ahead of their time, imho even the French Revolution didn't get to that level when it came to speech related to societal change, they had Babeuf but afaik he wasn't as mainstream, comparatively speaking. I think the radicalness of their speech was only matched on the Continent from the mid-19th century onward.