Made his size/height comparison chart for myself about a year ago, and it used to be different, I had every single EQG design I made on it then, and that was a bit silly, so I trimmed it down to just a few to be simpler. I tried to make sure I had one of every body type I have vectored so far on here, barring those with the same size as others, ir, changelings are the same size as normal ponies so why bother. The biggest thing here is the human to pony to siren trifecta, as those are the ones I worry about the most. Notably, as a siren, Kellin is much smaller than Aria, for he is also half her age, among other things.
 
This is the scale I use for all of my stuff, all of my vectors, baring a few early ones, have the right scale to them among each other. I often recycle parts and objects between worlds, so an object may seem big to a pony but looks just right for a human, and is indeed the exact same piece for both vectors. You can conceivably take a few random vectors of mine and slap them into the save canvas with zero resizing and the scale would be perfect. pedantic, perhaps, but it’s how I am and what I like to do. Ponies are small, but even still, tall ponies are fairly large.
 
The only actual numbers are under the humans because they have confirmed sizes, obviously. :P I’m just gonna ignore all the fans pestering Oliver about his height, he calls them ‘pussy holes’ for doubting him.
 
No vectors used here are new to the site, so I just uploaded a PNG.