I'm a big fan of VisX for the level of control it gives.

I love visx! Surprised to see your comment is the only mention of it here.

I guess it’s specifically a react library, but it’s such a sweet spot of control and built-in convenience. Having all the annoying stuff like curves/axes/scales/shapes handed to you in a pretty un-opinionated way is really nice.

I was at a startup for a few years and I built all of our client’s dashboards in visx. I loved it from the first minute to the last, and have almost no complaints. And there are few few libraries I can say that about!

Can recommend visx as well, it's great as it's basically a thin layer around d3, giving you maximum flexibility while providing lots of built in components to get you started.

VisX looks nice. We haven't had the need for more complicated visualizations yet but I'm always looking out for options.

I can second this. VisX will be a little more effort but it will let you build anything you could build using d3.