For SDXL, there are two versions:
V1 - 2 Epocs - Has the traditional Wet Plate Look (recommend Config 0.9-1)
V2 - 16 Epocs - Has a more varied and unique look, makes cool "vintage" photos in color or monotone (recommend Config 0.8-0.9, at 1 details tend to get fuzzy, eyes most noticeably)
These sorts of presets are usually skewed towards light sepia tones, this is trained on dark and imperfect photos. I'll likely post a few versions if unique and remarkable styles manifest consistently.
Trained on 100+ images of modern photographers with highly stylized wet plate photos.
Description
Use WetPlateCollodion alone for random effect, stack the other trigger words for stronger consistent results.
I run it at strength 1 to get the monochrome effect, if you want to give more of a damaged color photo, pull the strength back to .25-.33 and raise it until happy. See my examples for how I weight the trigger words, and how I describe other effects I want to see.