None are mentioned by Tolkien. However, since that doesn't necessarily mean there weren't any, I confess that my own Dol Amroth army has a unit of archers - but they're not Mithril figures. I just took assorted figures from other manufacturers and painted their tunics in what I perceive as the standard Dol Amroth colours of blue and white. They look slightly raggedy-arsed, but that suits their more lowly status than the men-at-arms. A bit of imagination and felxibility can solve most problems, Gavindoran.
"A worthy man, but his memory is like a lumber-room: thing wanted always buried."