The Dominion has basically two starship types. The attack ship and the cruiser. Late in the war they build a battleship type, but for most of the war it is two Jem'hadar ships plus Cardassian cruisers and light ships. Four types between the two for the majority on the engagements.
Starfleet has ships to deal with most of those, with the major problem being a mix of numbers and technology rather that classes.
Starfleet has ships to deal with most of those, with the major problem being a mix of numbers and technology rather that classes.