[TSiWRX]

^ To add, while not a part of the drivetrain, there's also the electronic brake booster. - https://www.ascentforums.com/threads/ibooster.22899/ . It's visible under-hood.

And continued increments in the EyeSight safety suite. This is obvious from just interior and exterior pictures of the vehicle.

There's also revamped engine mounts, which have contributed to better NVH in the mid-cycle refresh of the MY23+. I'm having lack-of-Google-Fu issues with searching up a proper reference for this one.