My height chart is actually a colour reference sheet for me, so it's a bit of a mess! xD
A couple of the characters weren't drawn at the same time as the others so they don't quiiiiite fit, but it's just for me, so it's fine. The actual file has the foot and inch indicators in the background that I can toggle on, and all the characters are on separate layers, so I can drag one character on top of or beside another if I want to get a better look at how their heights would line up when they interact!