Boki has 15mm Dutch 1793-1795 infantry including command. They are very nice. Sadly no cavalry or artillery. I would ask him for his plans.
I don't know other firms who make them. Cavalry and artillery could maybe portrayed by early napoleonic saxons. Hussars wore the early hussar dress so French, or SYW figures can be used. But Dutch use for artillery French material (Gribeauval) as limbers, ammunition wagons and the artillery itself except the gun barrels which are cast in the Dutch Republic itself (3-6-12 pdrs)