As someone with Google smart speaker dotted throughout the house, we constantly use voice commands to add things to our shopping list which unfortunately only supports Google Keep. But unfortunately there is only an unofficial integration with Google Keep that is quite tricky to get working. It would great if this was an easy to use feature, even if it was bundled with the paid subscription plans.
Thanks for your submission but I am closing this as the WTH FAQ specifically excludes requests for new integrations.