Terrastruct has a lot of options for creating diagrams, and I was specifically looking for a tool to visualize data. I personally create a lot of data schemas since I am an analyst, and it was fast and simple to create large data tables. When I present my diagrams, I appreciate that their diagrams are interactive so I can hover over and highlight certain values and it will show me how it's related to another table

Terrastruct makes it easy to organize diagrams with the use of multi-layer boards and even provides color themes that are presentation ready. I am still not a power user, but I can see the high appeal of the text-to-diagraming language (D2), could exponentially speed up diagram creation.