redux-first-router removes unnecessary complexity from redux-simple-router (which is my current choice) and embraces a more redux barebone workflow as you already know it.
It's a pretty new library but as the author mentions here, give it a try and see if it fits your needs.
There are no <Route /> components. But if you know Redux you will be right at home.
I think that's what u mean by" bare bones."
That said aside from intentionally not having Route components it's far from "bare bones." It's a rounded solution offering many secondary features a complete routing product eventually needs. And it has most of them now.
Far more features than packages like Redux-Little-Router. From redirects to data fetching to prefetching chunks to react native support to scroll restoration and a lot more. This is something I've built and used in real products for almost a year.