List of Amazon device types can be found
here.
For specifying multiple device types use ";" as separator.
If the device type is invalid, the device will not be displayed for the specified voice assistant.
List of Google device types can be found
here.
Google device can have only one type. And the type must begin with "action.devices.types.".
(For example "action.devices.types.LIGHT".)
If the device type is invalid, the device will not be displayed for the specified voice assistant.
Some device types require specific device traits to be displayed.