Larissa doesn't quite fit the main AA pattern. It shows up later and seems to be an echo of the popularity of Lara about a decade earlier. Not to say it might not be picking up momentum from more than one fashion. That's part of the problem with analyzing modern name fashions: many of them are complex braids of a number of contributing factors. I think maybe next I'll go back and finish up my essay on the Aidan/Caden/Braden/Jadon/etc. phenomenon which is an excellent example of this.