Some users discovered the files which show what names robot butler Codsworth knows; the names he can speak will allow him to address the player's character directly. Otherwise, he'll just use generic honorifics like "sir" and "ma'am".
There are some odd inclusions and omissions. For one, every major character from the Mad Max films are included, such as Toecutter, Humongus, Rockatansky, Splendid, Furiosa and Imperator. Other pop culture names include Kal-El, DJango, Hopgood and Lionheart.
In addition, there are some rather blue names included as well, as Codsworth will be able to address the protagonist as Tit, Tittie, Titties, F--k, F--ker, Sex and Sexy.
However, there are several common names that are missing, including Kyle and, ahem, Jonah. Those were ignored in favor of that popular name "Markiepoo".
To see the full list, check the Hastebin item.