There certainly is a shortage, but not a lot of historically important ships to choose from.

I have 3 unmodified Ares American ships:

Constitution x2
Thorn

In addition to those, I've converted:

Hebe to Chesapeake 38
2 Amazons to misc 32 gun American frigates
6 Swan class SoW to:
2 schooners
2 brigs
1 brigantine
1 whaler