Welcome to the forum!
This question comes up from time to time.
There's Trophy, Imperial, Britains. John Eden Studios puts out figures from the old Rose (Gammage) and Phoenix lines, from the 18th Century. Frontline has the Colonial Classics range, which were originally derived from the Phoenix Georgian range, with some new designs.
If you're not averse to painting your own, Imrie-Risley has civilian kits, too, from historical kits from the Revolutionary and Civil Wars, to a range of figures based on Dickens' "A Christmas Carol". Forty-Third Ltd has most of the old Phoenix catalog, including the civilians, available as kits, and Eden also makes castings available.
Those are ones that come to my mind.
Prost!
Brad