What RE4 enemies reappear in RE5?

I have played through RE4 and RE5 is next on my "games to buy list" and I have noticed while watching and playing things related to 5 that a lot of the bosses and minibosses have been re-used. The first and most obvious is Dr. Salvador I have beat the African version of him multiple times in the demo. Also in trailers and reviews I have noticed an el Gigante type creature. I know I've seen more but I can't think of them now. I just wanted to know what else was recycled.