@animatosoor thanks. It has been really fun AND I am learning a lot.
It has has been very informative to learn how each illustrator handles differences in sex, age, situation, species, etc. And it some of that has gone into how I have been approaching characters in my world-building as well.
For example, most of the illustrators have much larger heads on their children than their adults. The adults tend to be proportioned 'closer' to reality (usually still very exaggerated but closer.) I have decided to do the same thing in my style. Children's heads are wider and their bodies are 1:1 with the head. For adults, I am using round heads and their bodies are usually 1.5x-2x the head height.
For another project, I am building out fantasy races and this comes even more into play as I am using proportions to help define the races. It is nice when one project informs and reinforces another project... got to love synergy.