Also I doubt that there is a continuity between the mentioned Erasmus students and staff in the European-union for example. I would assume that's a later addition to the wikipedia article when the most likely subject of Euro english is about patterns of the use of english-language in the EU bureaucracy. Maybe a better title would be EU-administrative English or something of the like.
What's not so often talked about is of course that the pronunciation of english by non-native speakers is different and I do think there is tendency for some convergence among some aspects of pronunciation that I observe in meetings and zoom calls at work. Aspiration of consonants, clearer separation of individual words. The result is that native-speakers - while being more eloquent in English which puts them at some advantage - sometimes have a disadvantage because their advanced use of language is not understood well. IIRC MTV Europe realized that british hosts wouldn't be understood across europe, when english-speaking french/german/italian hosts would.