[alkonaut]

The Suave-Fable-Elmish stack (Made popular under the "SAFE-stack" name) is very nice. https://safe-stack.github.io/

It has the drawback of the frontend language not being as tiny as Elm is, but it has the benefit (which I think is no little benefit) of having the same statically typed language (F#) on both front and back end.

Whether it's "Relatively popular" is hard to say. It's tiny as far as web stacks popularity goes, but in completely functional web stacks it probably has taken a bite already.