Okay, just came to the realization that, directly following baby Harry's defeat of the Dark Lord, around 60% of the newborn male wizarding population would be named "Harry". And roughly 20% of the newborn female wizarding population would be named "Harriet".
So, from, like, Harry's 3rd year onwards, the sorting ceremony would sound like this:
And some mothers would, like, switch it up a little:
So, it's 3rd year, Sirius Black is on the loose, Dementors about to board the train, and a bunch of excited first years are like, "Hi, my name is Harry!" " Get out of here, MY name is Harry!" "Mine, too!" "I'm Harriet!" "My name's Steve." Poor Steve.
Anyway, Dementors attack, Harry is sitting out the sorting ceremony in McGonagall's office, and everyone else is sitting in the Great Hall, listening to Harry after Harry get sorted.
Malfoy's fuming, promising death to any Harry that sits near him.
Ron's like, "WTF?!"
Hermione's like "Considering naming trends, blah blah blah, this was bound to happen, blah."
Neville's like, "I wish I had named after Harry..."
And Ginny is all, "It's a good thing I'm the last kid we had, otherwise you know the next one would have been named "Harry"."