List of available metrics that Klaviyo provides through an API available here.
We highly recommend to contact integration platforms to figure out what metrics they can extract. Sometimes integration platforms don't have certain metrics out of the box, so it's better to contact them.
More integrations to Google Sheets
Google Sheets is the most powerful tool for storing and organizing data ever. If you want to automate your processes and increase your productivity you might consider automating your day-to-day operations with Google Sheets. It’s more than a spreadsheet tool, you can use it as a database for all your business operations and organize data in a smart way. Integrate it with hundreds of tools you use to make your life easier.