I didn't know about Looker, but my BI needs are modest and Data Studio is free and simple enough.

Looker is a third party solution right? Or does Google offer Looker directly in some way? If you're up for sharing the pricing for looker, I'd be curious (the looker website has a request quote button, so I'm guessing it's not cheap)

Google offer Looker directly, they acquired them a couple years ago. Pricing is in the mid to high tens of thousands a year.