I personally like names that have a bit of lore to them, but are otherwise iconic and don't need add any extra characters or numbers to be usable on most platforms.

My original name on other platforms was RhetoricalHypothetical, but that ran into a couple problems. One, it's really long, and two... it's really long. As in, so long Steemit wouldn't accept it.

So, I've been going by the greatly shortened RhetHypo for the most part.