It’s obviously more likely to find a C# codebase riddled with obsolete OO patterns than a Rust one.

But I think the strongest signal for that would rather be e.g the code being related to web/service backends of some kind. I much more rarely see that kind of thing in any other context (games, mobile, scientific, desktop, …).

I stay as far as possible from web stack stuff more than specific languages, but probably for the same reason.