-
My Mavic Pro does that. They are genuinely superb drones. Old and new model. Huge ranges, good battery life (for a drone), good device compatibility and the best bit is they are super portable.
DJI call it ActiveTrack https://store.dji.com/guides/film-like-a-pro-with-activetrack/
Sorry for the pedantry, autonomous flight means independent decision making and routing to me. Follow me modes are slightly different as its not the drone that does the decision making.
The skydio will follow you, via a beacon or image recognition.
I want that, if I get a drone.