I think that if any of them would survived they'd either behave like a "normal" great raven without a master/purpose and became sorta wild or they'd go to their last master.
Well...
Anomander Rake is dead
but Anomandris (Im not 100% sure if i got the right name) took after him, so ravens could've go to him to serv him in the black coral or just go there to take shelter/live there because andi are quite a "magical" race.
Still we don't get any evidence that any of them survived. I think that some of them should have. Why? Well they have to guard coltains soul or his vessel (i guesse).
I have found errors in my answer. Great ravens are not the same as Crows guarding vicans souls. I started reading again from the begining and I didn't really found anything related to what could happened to great ravens afterwhole action with chained god. But as I mentioned earlier if any survived they'd propably go to black coral. And I think Andarist was cousin of Anomander not Anomandris (Anomander is propably the same person as Anomandris I just rememered those two names and I thought that they belonged to two different Andi). I'll fix my answer if I'll find any more errors.