I Don't Even Know (Tags, Memes, and Everything In-Between!)

Question

Heya, so, I have a few ideas for books, and I want feedback on which to publish first. Just because I'm publishing it first, however, that doesn't mean that it will be posted right away.

Here are a few of my ideas:

• I'm Not Human, Either (Sans x Gem! Reader)
   - This story is about the gem (T/Q [Type of Quartz]), who falls into the Underground with her companion, Steven Universe. She was told to watch over the human/gem hybrid, so once he trips on a vine and falls into a gaping hole, she has no choice but to go after him. They meet many people who aren't quite human, either...

• Not Who She Seems (NaJ! Paperjam x Tsundere! Monster! Reader)
   - The sister of Undyne, the fish jock, is transferred into her sister's school which is known as Underhigh. If Undyne resembles a piranha, (Y/N) resembles an angler fish. She drags victims in, then lets them get hurt-- which no one knows is her fault. What happens when a black skeleton survives her storm?

• Chromophobia (Ink Sans x Reader)
   - Princess (Y/N), the sister of Prince Asriel of Overtale, is stolen from her lovable brother's grasp by none other than Error, the king of destruction. She now lives in the Anti-void, and has for almost twenty years. Her sanity is slowly being drained away, despite her ability to create anything out of magic. One thing she lost over time was her ability to tolerate any color. Yes, she is a chromophobe.

I guess those are all of my ideas so far. I kinda wanted to do a Yandere! Blueberry Sans x Reader, but threw that idea out of the window. I just wasn't inspired. So, comment which one I should post first and I'll be happy to do so! Thanks!