I'm a very happy customer of https://www.count.co

It's a big canvas that multiple people can use at once, with SQL and Python, text annotations, comment threads, shapes and drawing etc.

Connects into the regular cloud database / warehousing systems.

It's great because it allows you to get the flow of data quite literally visualised on a big board and it exposes the underlying SQL so that, over time, non technical users can learn by exposure and osmosis, as things aren't super hidden away "behind the scenes".