It's personal preference. Some see a trend so they follow it (Lil, Young, etc).. Others go so far left you wonder how they came up with the name. Some don't care and will use an online name-creation tool and run with that. Then you have the more simple artists who just use their name. I don't think there's a right/wrong way cause, as some have noted in this thread, it all boils down to the music. The only side issue is, there's a marketing play to be had so, in my opinion, the name can't be so booty that it gets laughed at and discarded before the song is even played.