User blog comment:IamJakuhoRaikoben/Chapter 420: Lamia Scale's Thanksgiving, Review./@comment-121.54.54.41-20150216143236/@comment-7418318-20150216144422

Considering that wall in her apartment, I'd wager she was able to track most of them, with just a few exceptions.

She already said that Makarov was missing, so we know for sure she doesn't know about him.

And we did see a few photos on that wall, so she has some idea about Mira, Lisanna, Elfman, Juvia, Gray and Cana from the top of my head. There might be more, though I'd need to check.