Well you can say certain characters repeated from series like Naruto, Bleach, and what not; but to say everyone from said series sounds pretty downright ignorant.
What gives true meaning to the term overdone in cosplays are not just the ones that are done repetitively; It's the ones that are done repetitively and horribly. This occasionally happen as a result of artists being blindly faithful to their character.
It's either a result of the artists completely ignoring the basis of a good foundation due to lack of skill, or a lack innovation to create a original design which can effectively improve the overall concept of said cosplay.
Either way
Any widely known, anime or video game that's been either product of VIZ media, Square Enix, Funimation, or Nintendo for the last past 10-15 years or so.