Probably moral guidelines that are left leaning. I’ve found that chatGPT 4 has very flexible morals whereas Claude+ does not. And Claude+ seems more likely to be a consumer facing AI compared to Bing which hardlines even the smallest nuance. While I disagree with OP I do think Bing is overly proactive in shutting down conversations and doesn’t understand nuance or context.
Socially progressive. I think most conservatives want a socially regressive AI.