AFAICT all of these are client-side frameworks. Dream is a server-side framework. I currently write my server with Dream and use regular JS React on the client.

If you glance at most of Dream's examples that serve an interactive client, you will see that they serve JavaScript:

https://github.com/aantron/dream/tree/master/example/k-webso...

You can use anything you want for the client, and I use the JS ecosystem heavily in my own usage.

There are several full-stack OCaml examples, but that's entirely optional:

https://github.com/aantron/dream/tree/master/example#full-st...

As for server-side comparisons, OCaml is much easier for me to work with than, for example, TypeScript for many reasons. The first is that I can compile several hundred OCaml files, in the rare case of a full rebuild, in less time than running tsc incrementally on a small project, resulting in a much better iteration experience.