First off, thank you! Secondly, I'm going to get into this a little bit because it's been on my mind recently.
Foremost it's because I see them as different people in some ways. I'm not sure how to explain it entirely, and I'm sorry if it's disappointing. But it's kind of funny this topic was brought up because I've been agonizing over Lea's height this week.
I wrote out appearances a long time ago and I had ideas that don't really matter anymore. Lea went through some different things for being a woman and wanting to be a knight, and originally her height was just another thing that was weaponized against her and her dream. I later decided being a woman would have been enough, and I did increase her height, but not much as I didn't want to stray too far from my original vision. Until I was writing out a more recent scene and I stop and rip out my hair because I really wish I matched her height with Leese. But since I already had it on the itch page, I didn't know if I should change it or leave it. I just wasn't thinking it through and it's kind of my biggest regret right now.
Gabriel was originally going to be two characters, fraternal twins, but there was so much going on with it I decided to merge them but keep the physical differences. Male Gab was always the beefy warrior type while female was lithe. There were jokes between them on their height, and I never really thought to change it, but it's another one I started reconsidering along with Lea.
For other characters, it made sense for race and regional reasons. Xiao is human, but humans also have sub-races, and where they're from, Xiaowen is the tallest for a man and Xiaodan is the tallest for a woman. I had intended to show that the people there are just really short where they're from and that there are differences with sex for some races. This is also why Lyari is the same height as Lyth.
Anyways, I've been thinking about doing some height adjustments, but I do worry about upsetting people if I do, even if I shouldn't. Everyone whose seen it has a mental image now, and I don't want to ruin it. Maybe I'm also overthinking it, but I feel torn and terrible about it. Regardless, I hope this all makes sense!