There aren’t. Mercedes system only works in two states on freeways during the daytime on sunny days at speeds below 40MPH with clearly marked lines and no construction. There are so many qualifiers that it’s basically useless outside of the attention grabbing headlines.

Mercedes, some states in USA.
But it’s only verified for day time, and on marked roads.
But that’s still better than Tesla.

Mostly you can’t - most fsd options I’m aware of are mostly in the robotaxi space. Here’s a website that tracks where they’re available.

Otherwise your best bet today that I know of would be Mercedes Drive Pilot, which has a Level 3 rating for being autonomous.

Mercedes and BMW IIRC