Thanks for posting here in the Google Nest Community.
We appreciate people who are keen on sharing their thoughts with us. As of the moment we don't have a list of automation starter enabled devices. Here is a list of compatible devices for your Google Nest speakers. You might want to check these links too, to know more about the routines feature.
Let us know if you have further inquiries and we're glad to assist you further.
We haven’t heard back from you, I'll be locking this thread in 24 hours. Feel free to create a new one if you have more questions or have other concerns in the future.