Saying that the nocturnal side of Genesis was the same as the daylight side would be a massive lie. The nocturnal races and traited demi-humans were exceptionally unique due to the fact that many of them had to undertake different jobs and risks in their everyday life.
It was quite shocking to see the small handful of vampire children arriving with the other students. They were deathly silent yet the glimmer in their eyes under the starlight was clear to see. They were the same excited that every other child was.
The batman race had quite a few, just as the harpy race had. Beyond this, there were dark elves and even some of the dark affinity merfolk children here and there. The numbers were not smaller whatsoever in terms of how many had arrived to learn of the guilds.