Ultimately, at the end of all things, it's a pointless and fruitless exercise to try to point down specifics to a narrative that's never been defined in its own right. The Eugenics Wars isn't a story in the Star Trek universe so much it's a collection of anecdotes and random facts made up by writers working on the fly without any contextual foundation to the thing they're referring to. Much like the Clone Wars era in Star Wars before the animated Series nailed down the specifics, even what we do know is contradictory and nonspecific.