>>107111732
of course there was, Radio Equipment Directive (RED) 2014/53/EU, what it mandated was a common charger, not a specific implementation.
https://eur-lex.europa.eu/eli/dir/2014/53/oj/eng
read the 12 point of the preamble, the article 3a, and article 47e, and this is only after a quick search of the charger and common keywords
and for the last time, there is not a lock in which is the actual common standard port