In addition to Espresso-Web cheat sheet you can find a cheat sheet for UIAutomator APIs. Their methods were split into six groups to reflect the usage area and make it simpler to remember and navigate:

• act – represents actions that can be performed on the device.
• find – contains methods to find single or multiple objects inside the UI.
• get – calls in this group allow to retrieve device or package properties.
• set – is responsible for layout hierarchy compression.
• wait – shows waiting methods.
• watch – consolidates all the methods related to UiWatcher mechanism.