Not much to say since there are no visual sketches and the like, although jackalopes can easily fit within the Pokeverse. Personal opinion is that Ice/Fairy could be a better fit since they're more of a fairytale rather than a scientific observation (and even then, viruses aren't exactly venom-related). Granted, that type change would affect your design, so take it as you will.
I believe I've already commented on this on PS, but while having the designs inspired by common clothing items is great, I wouldn't go as far as them being literally used as such. Kind of breaks the idea that "Pokemon came first" and then humans basically mimicking their traits in their own technology or society, but I may be splitting hairs here. Cool theme nonetheless.
Now for some of my own
A design I've revisited since I wanted to break even further away from its older similarities from Duskull, so I added the antennae and removed the ribcage to make it more similar to a regular beetle. Based on the grim reaper and beetles that feed on cadavers. Name comes from Necro (death) and Athropod (insect classification).
Another old design I've decided to completely revamp. Based on memorials and tombs, somewhat concerned that the design is too simple by modern standards, but at the same time it's not too similar to existing designs either. Names comes from Ghost+Obelisk and Spirit+Pyramid.
Finally some new designs I finished today. Based on the typical family in the retro days, with the hen wearing an apron and the rooster suspenders. Names comes from Hatch+Chirp, Hen+Embrace, and Rooster+Stern.