Hey @mufflerdog!
Retool doesn't have a component for this but it is on our radar, a similar component was actually mentioned in this thread made by another community member outlining a number of components that might be great additions to the platform. In the meantime, you might try using a setup with multiple listviews as mentioned here! I've attached an example app of a container grid with three columns that uses similar ideas.
Let me know if any of this is helpful 
grid_with_listviews.json