Assuming the Austin robotaxi service continues to go smoothly, I expect Tesla will leapfrog both of them in the next 12 months. Tesla's cost-effective approach (cameras) combined with the fact that they have already scaled vehicle production positions them really well.
Media (and therefore people who trust it too much) will point out places where each of the services goes wrong, but the reality is that likely all of them are already much safer than human drivers if you define "safety" in terms of severe accidents per million miles.
More than a million people die each year from automobile accidents with humans behind the wheel.