i can see the point people are arguing, but i do get the op's point and have thought similar of my boys, not overwhelming pride but pleased that they are accepting.
there is a child that lives in the same cul-de sac as us and my boys often play out with him, he is 14/15? but he has sn that mean his mental age? (is that the correct term) is more on a par with my 7 and 10yr old ds2 and ds3. all of my boys play with him, and when we see him out and about they alway wave a cheerful hello etc. they simply see him as dave (this is not his name) and his sn have never been an issue.
recently some older children were being very mean to 'dave' picking on him, calling him names, these were teenagers similar age to my ds1. anyway my ds2 firstly told these teens who are much older and bigger then him, to stop being so mean. and then he came and told me what was happening, he was very upset and he couldnt understand WHY these teens were being mean to 'dave' as he said 'dave has never done anything to them, why do they have to be so nasty' they had also used some VILE terms begining with m ending with g...
ds2 had never heard this word before and had no idea what it meant, but he knew/could tell it wasnt nice.
anyway we had a bit of chat about how some people are not very nice and will pick on others for all sorts of reasons ie appearance etc and this includes sn and disabilites. ds2 knew implicitly that this was wrong and YES i was proud that my children stood up to bullies, that they couldnt understand why a child would be picked on for having sn. it was refreshing to see that innocence when so often in the media we hear the opposite.
i didnt praise him for being friends with dave, i did say it was nice of him to stick up for him AND good that he came and told me. i went out took note of the school uniform the teens were wearing and phoned their school to make a complaint about their behaviour!
anyway slightly different example but i can relate to how the op feels, pleased that i seem to be raising children who are kind and empathatic and caring etc, who will hopefully grow into kind, caring adults. and its at moments like this when you spot a bit of the adult they are growing in to and that is something to feel good about imo.
re cleft lip, there was a thread on this recently, i think it came up in a few threads. and hare lip is known to be offensive. do a quite search and i am sure the threads will come up :)