Mob Spawns

Ok guys, need your help here.

I have it set up so almost every mob will spawn naturally within the world. The only exceptions are silverfish, irongolem, snowgolem, enderdragon, and villagers.

I need you guys to keep an eye out and let me know if you actually see any of them spawning. I have reports of ghasts, but i don't know if slimes, magmacubes, pigzombies, or giants are spawning correctly. Let me know if you see any.