Google Authenticator, Lastpass Authenticator, Duo, etc are all essentially the same.
I think the hardest to defeat is probably something like Yubikey.
One tip for Google Auth - you might want to have multiple devices function for this. To do so, take a screenshot of the QR code and save it. You can use this to add a new device anytime. Just don't save it in the same place as your passwords :-)