A bit late to the party, but as someone who recently started taking her snakes to outreaches, where they meet a lot of new humans and spend a *lot* of time being poked at by children, I thought I might share my opinions anyway.
At least some snakes *definitely* recognize their owner. The calmest, most outreach-awesome snake I know, an adult carpet python, is perfectly happy falling asleep around a stranger's neck while random people stroke her, but at the end of the day she slithers with incredible rapidity back on to her human. My larger carpet girl is my current outreach staple, because she's big enough not to be as spooky as my littler guys. I definitely notice that she's much shyer about some people than others. There was a perfectly nice-seeming girl at one outreach who really wanted to hold her, but Zillah was having none of it. Eventually I managed to get her off of me and on to the girl, but it was a great deal more work than usual. And she does tend to try to come back to me when people she finds more threatening are about.
My little corns seem to go based on general calmness more than anything. While my friends occasionally come over and hang out with them, most of the time I'm the only person who holds them, and they're perfectly cool with other people when other people do show up. Since they're still yearlings they haven't had to do marathon outreach sessions like my carpets, so I don't know how they would react to being more stressed. But based on them, it seems to me that the most important thing in socializing corns is just that *someone* holds them. More people wouldn't hurt, but I think all it really takes is you.