Filtering Live Photos Is it possible to setup a Smart Album in the Photos app that would group all Live Photos? Neither app seems to provide a quick way to find all your Live Photos.
Starting with macOS Sierra 10.12.3, Apple has added a Live Photos Smart Album to Photos. It may be accessed from the Sidebar (View → Show Sidebar) or in Albums view (View → Albums).

It is still not possible to setup a custom Smart Album with Live Photo as a criterion.