Seeking more feedback, if you don't mind (Patreon)

Firstly - thanks so much for sharing your thoughts re: 'aura'. I really really appreciate it, the feedback was so helpful!

I have changed my mind, and decided to use the word 'essence' instead :) 

Here's my second request for feedback: what do you think of the following phrase?

"So she's gone off on a secret date? Ooooh, do you think she has a girlfriend? Or a boyfriend? Or maybe they're spirit-kind?"

My rationale: I am trying to avoid modern LGBT+ vocabulary (and other words that are specifically modern.) I want to use words to describe third-gender people in Aerial Magic that fit with the setting. 

If I don't use 'spirit-kind' I'm thinking about 'genderless' instead (the word I used for Puppy.) 

However, I'm slightly hesitant to use 'genderless' to describe humans because I've mostly seen it used to describe objects eg. clothing and bathrooms. But since 'genderless' was initially used in the comic to describe a sentient creature, perhaps it wouldn't carry a connotation of 'object' if I then went on to use it to describe people? I'm not quite sure how I feel about this.

(I suspect that I spend far too long thinking about words.)

I'd be especially keen to hear thoughts from nonbinary folk, if any of you have any feedback :)

P.S. Trans people in the world of Aerial Magic are known as 'self-named' which is a term I think I'm pretty happy with, though I'm open to feedback on that too if anyone has any :)

ETA: Okay, spirit-kind clearly is a bad idea, thanks for the feedback! I'm leaving this up though, to see if anyone has thoughts about alternatives, 'genderless' etc. :)   

ETA 2: Copying this here from one of my replies, to see if anyone has further thoughts on this:

When you look at third genders in various historical cultures, third gender people mostly seem to take a up a role specific to the way that society functions. 

One of the elements most unique to society in Aerial Magic is that the people have, for a long time, been interacting with a sentient nonhuman culture that (mostly) sees gender as this bizarre, meaningless human thing.

And so I think that humans in the world of Aerial Magic who aren't happy with the labels 'male' or 'female' would look at spirits and make a new label for themselves. And so I'd like a term that reflects that.