Yeah, most of the Aegis were rented from the Ravens though I do not think we were ever told what they got in exchange.
I think we can agree #1 would be the Ravens, #2 would be the Sharks because of merchant escorts . . .
Honorable mention goes to . . .
Jade Falcons, Wolf Clan, Smoke Jaguars, Nova Cats, IMO Vipers to survive, Adders after Burrock absorption
Smallest? Smallest has to be the Blood Spirits, they traded away their limited ship numbers for more mechs. Then I would say the Fire Mandrills, Horses, Hellions, and Cobras.
Jags had numbers, but it was mostly a patrol fleet . . . they had a few large ships (Texas, Potemkin, Liberator, McKenna, & Black Lion) and lots of small vessels- they built the Fredasa after all.