I do remember Matthew Davis was once documented there when he was 15 - 16 back in 2016 and 2017. But that's pretty much it. A single thread on a Gen Alpha at that time is completely redundant unless said child has done something very unspeakable because their brains aren't fully developed yet. They're held on a much lower standard.
There were the Ethan Ralph baby threads I guess but those weren't really straight up lolcow threads and a lot of people were uncomfortable with them as is. Otherwise I'm pretty sure threads on kids are not allowed.
I'd count Jazz Jennings as a honorary case, man's older already, but was never given a chance to grow up, is effectively stunted in mental development, and was documented retroactively.
In 2012 four 13 yo boys bullied an elderly bus monitor on a school bus in upstate New York. They called her a “fat-ass” and threatened to dox her so they could egg her house. The video was posted to Facebook, and everyone felt bad for the bus monitor. They doxxed and sent death threats to the students. A fundraiser was set up for her so she could travel to DisneyWorld and retire. The students were suspended for a year. A few years later, two of them made a special needs student drink piss out of a toilet. They probably count as horrorcows.