The Eisenberg class was a Starfleet design of the 32nd century, represented by the USS Nog and named in tribute to Aron Eisenberg, the actor who played Nog.
The class is seen in the third and fourth seasons of Star Trek: Discovery, among the ships gathered at the hidden Federation Headquarters when Discovery arrives there in Die Trying. Its only identified member is the USS Nog, registry NCC-325070.
Both names are a tribute. Aron Eisenberg played the Ferengi Nog, the first of his people to join Starfleet, throughout Deep Space Nine, and died in 2019. The producers of Discovery named a ship for the character and its class for the actor.
The Nog is seen again with the fleet in the fourth season, when Starfleet has begun to rebuild after the end of the Burn.