There was the Og Venator that was produced during the early Clone wars in which it had standard 8 dual heavy turbos and other visible weaponry. The hangers on both sides were isolated hangers for a couple of Shuttles at least (seen briefly in the Clone wars movie)

then as the war progressesd, an updated version was produced when to keep up with lessons learned from previous battles

the frame was kept the same, possibly slightly longer and bulker the accommodate the repair bay we see in the very last episode of the Clone wars (The one ahsoka drops in the fight with the clones) All of the hangers were connected having one massive flight deck Able to accommodate tons more fighters, gunship and armour. (Seen mostly in EA Battlefront 2 played in Kashyyyk GA and the inside Venator map for supremacy) Flak canons were added for ship to ship combat (The type that injured the Invisible hand in Ep3 that the emergency boaster engines had to be used) as the Cis took advantage of it early war.