With this size guide, it gives a rough estimate of what all the characters are like in terms of height. As I established, the Shadowy Fiend is the tallest and the Littoral Liquid is the smallest in terms of height (but big enough to go over the Protagonist's head). 

This was a quick mock-up with both the normal/ finished characters as well as the silhouettes. This also shows that most of the silhouettes are nice, but the Rag Doll is the worst because of the tongue. I do like how it shows the different heights in a drastic way and should give people a true idea of how scary this game can really be. I think it shows a lot of potentials.