The recent ENT novels have plenty of descriptions of Romulan War battles, but typically they dare not mention any ship types other than NX and Daedalus
. As far as I know, they have not invented a single ship type of their own yet.
Typically, a battle is described in terms of listing a lot of starship names. There are about thirty names in the novels so far that are more or less directly attributed to the Daedalus
class, which the novels treat as the mass-produced salvation of Earth in this war, and a dozen "floaters" that may belong to other classes.
So, that gives us statistics like the ones quoted above. Doesn't mean these would necessarily be consistent with what we see on screen.