Are there more pejorative and disparaging sayings about people who actually know things than about people who pretend to know things?

I’m talking about derogatory terms like “nerd,” “geek,” “wise-ass,” and so on, as well as sayings like “nobody likes a smart aleck.”

It seems to me that these terms and expressions are used much more frequently in the business world than derogatory terms like “show-off,” “charlatan,” “fraud,” and so on.

I can’t even think of a commonly used saying for the latter. Only: “Fake it till you make it,” which is really more of a reinforcement of the idea that knowledge isn’t very valuable.

Is it just my impression?