I have been so impressed with Luxembourg in your Black 2 Nuzlocke, she's now lasted past the halfway stage of the game, longer than both Entendre from White and Octant from White 2. She may be your third female Liepard in what has been four documented Unova Nuzlockes so far but she's been far more resilient than the other two, and with Ghost and Psychic-types in full swing she'll finally start proving herself. Plus there's also Egypt evolving very soon, which will be great because she'll be really strong as a Krookodile.
Also, I hope Denmark can live up to what Grus from White 2 did. I recall when you caught Grus and you found her underwhelming at first because of her having Big Pecks (along with coming close to dying as a Tranquill) but once she evolved into Unfezant she became so resilient and was a true star of the team even with her sacrifice right at the end. Remember, Grus is looking down on Denmark and hoping he can become just as amazing.
Also, you got the Elgyem you wanted. Lonely may not be the best nature for an Elgyem but at least it wasn't a -Sp. Atk nature, and hopefully you will consider her when you are in need of a Psychic-type. She may be slow, but has some decent defenses and HP backing up that high Sp. Attack. I hope you use her because I rarely see Elgyem getting used in Nuzlockes so it's something nice and different, plus you'll still have a chance for Litwick at the Strange House.