GO!
I love "Pocket"! plain and simple
A lot of EU or KR usernames are cool
Nikoya is kinda slick, same thing with Archetype and Sprouts. I oddly like Hekzy(or however tf its spelt), MilanTheMyth is alright, and Nyon is kinda simplistic in a nice way.
Objectively speaking: Worst is probably 100TBoeJiden(too confusing people mistake his name for joe biden), or something like spamming characters.