[thom]

I've used Mermaid, partly because it integrates well in both GitHub and Notion. It's fine, quite featureful really, but the lack of any ability to control layout properly makes complex schemas quite a mess when rendered. Not sure how others of these declarative, text-based engines deal with that.

[flarg]

Use Mermaid in draw.io. It renders Mermaid into native draw.io shapes that you can rearrange.

[tabulatouch]

I've been looking for such a solution but for class diagrams. Auto generating from code and edit them in draw.io. Do you have any suggestion?