No, we know the names of certain white girls and usually the reason we know their names is because there was something sensational around the reason they disappeared.Very progressive of you, to recognize the importance/interest assigned to whiteness!
Natalee Holloway was a teenager who disappeared on a HS graduation trip to Aruba. The international intrigue around that case brought her to the forefront. Petite was live blogging her trip and disappeared. Boyfriend who was blogging with her arrives home and lawyers up, refuses to talk, and then disappears. Laci Peterson had some outside the norm issues related as well. Namely that her husband who was front and center "looking" for her ended up being a psychopath who killed her.
The other reason I think white women in situations like this tend to get attention is because, in the U.S., white women are the least likely to be murdered. So when one of them dies in circumstances like this, it is more of a rarity. Women in general being murdered is more of a rarity. These women stay in the nees cycle because they don't get knocked out so soon by the next victim. There is almost a new black shooting victim in Indianapolis every day. Time does not get spent on them because they are constantly being pushed off the page for the next. Sad but true.
However, there are certain black males you probably know the names of because of the circumstances of their deaths. And that is media driven. When was the last time you heard much time being spent on a white person killed by police? I bet you could tick off several black males that have. Guess white guys getting killed by police don't matter as much either.
It is the circumstances behind the incidents that gets them in the news.