Nova Cats, what is left of them would need get as far as possible from the Inner Sphere and try rebuild themselves into some semblance of a Clan.
Clan Protectorate at the moment is only place they got, they need make nice with the local Sea Fox Spina Khanate fleet, try get that leg up, including warming up new Iron Wombs on Marik.
If they're able make it generation without being overranned by someone.
The Clan Protectorate is a mix of 3 clan groups. First is some Nova Cat refugees (but not Kisho's group). Second is some Sea Foxes (I forget which, but it doesn't matter for this). Third is the Spirit Cats.
Prior to the blackout the Spirit Cats were members of the Republic, part of the Clan enclaves and Clan militia forces. They had some (we don't know how much) genetic data and iron wombs. The Clan enclaves were descendants of the Clan forces that joined Stone's coalition to stop the Word of Blake and then joined the nascent Republic. Rather than force these units to abandon their heritage they were given land and support to build Clan enclaves in Republic space. They could form Clan units, up to cluster size, and these were militia units outside of the main RAF units of the Triarii, Principes Guards, and Hastati. (See the 1st paragraph, left column, pg 185 of FM3085).
There were enclaves of every clan that gifted units to the Republic (FM3085, pg 167):
Clan Ghost Bear: 10th PGC, 13th PGC, 33rd PRG, 42nd PGC (A Galaxy-worth of garrison forces)
Clan Jade Falcon: Alpha Galaxy
Clan Wolf: Delta Galaxy
Clan Nova Cat: Alpha, Delta, and Tau Galaxies
While the details of how it came to be I have forgotten, I do recall there being discussion of at least one Hells Horse-enclave in the Republic somewhere.
Suffice it to say, the Clan Protectorate has iron wombs, it has genetic material to make sibkos, and in Kisho Nova Cat's entry in Legends, it says when the Oathmaster made him depart, Kisho had a complete technical and scientific database and samples of their entire bloodname genetic legacy. With a safe place and the resources Kisho could pull a fidelis 2.0, a Wolf in Exile 2.0, or something similar.