In this site, you will not find an exhaustive legal review of your data. Why ?
Laws can change depending on your location, the time of application, and from the changing policies of online service providers. The US are currently changing rights : it means that things can be different, even between two neighbouring states. The strategy proposed here is not to have legal issues for your executor to get back to your data. These processes can be time consuming and not worth the hassle in conditions where there are lots to do elsewhere. That’s why we do recommend you to prepare for an easy transmission of your belongings.
TL;DR#: let’s do the things quick and simply. A quick act can avoid long procedures afterwards.