Literally every non-budget brand (and even some of the budget brands) offers automatic lane keeping with traffic-aware cruise control somewhere in their fleet. It might only be on their flagship vehicles, and possibly only on the top trims, but you're living in a Tesla-decorated cave if you think those are still Tesla-only features.

On a Tesla, it's not even an FSD-specific feature. Autopilot does it.

FSD isn't basic ADAS. You could just say no.