"I don't know how you picked yours, or where 'Juliet' came from, but mine's a nickname I've had since I was eight, and Stella and Golden both have... empire themes, of sorts, that they just extended to their nicknames, and Amariah just picked the other piece of her name. The Sherlocks don't tend to have empires with themes, or nicknames intended for general use - not unique ones, particularly - or much name variation. I mean, my Sherlock is surnamed Stark and the other one we met isn't, but calling her Stark wouldn't work because that's all the Tonies' last name. So they'd have a little more trouble hitting non-redundant targets."