Ok Nightstalker has responded to me. He listed the authors of the ships included in his work and said this to me:
Most of these have come from various fl mods I just made sure I chased down the correct credits for the models. I've also got permission for most of the models through OutaLance Shipyards (One's that belong to them that is). I have been in contact with most (Some cannot be contacted anymore either because they have left the community or their e-mail address are no longer valid). Most of the models I got came from Battleclinic (Several I know are from different games like Armada and Bridge Commander). I do not "steal" ships, I always make sure they are properly credited and contact the author if the readme specifies.
Of the BC authors I've seen in his list he gave me I saw Adonis, Dave975, Dkealt, DJ Curtis, MRJOHN, Raven Night, USS Prime, yopyop, Tiqhud, Executioner_de, LC, and probably a few others. If anyone would like me to post the entire content of Nightstalker's reply here I'll do so.