This is a cool concept, for several of the designs though it feels more like you designed monsters, and then found fears that describe them though. Maybe refine the idea a bit more, and consider the psychology behind fears and not just the visual aspect of phobia triggers, I think you could be onto something good. I like the Papyro design with the blood hinting at paper cuts (I assume?) I think that's the most interesting and unique one of the ones you posted, and I could see it being from something, would be cool to see you expand on that design for sure.