(4), (5), and (6) unknown-class science ships USS Hawking, USS Planck, and USS Curie, one each to tag along with 1, 2, and 3 above. I had thought there was a mention of a USS Hawking in a TNG episode, but a cursory glance at Memory Alpha shows no listing.
(7) unknown-class specialty ship USS Galen (staffed by advanced holograms and serves as primary medical resource)
(8) unknown-class specialty ship USS Achilles (carries vital backup components for the fleet's technology along with industrial replicators)
(9) unknown-class specialty ship USS Demeter (houses a vast airponics bay to provide supplemental food, as well as storage facilities for biological resources the fleet finds along its way)
I'd like to see the EMV be revealed as Olympic
Class (USS Pasteur
from "AGT..."), as I've always thought of her as a very classy ship design. The holo-ship from Insurrection is probably just as likely; in which case I'd like to see (8) or (9) be Olympics