New mobs/mob variants

Both the husk and the stray were amazing ideas. Unfortunately they were both (I feel) badly executed. I feel that if more variants for mobs like parrots and other peaceful/hostile mobs were added to the game it would add a lot of variety to the game. It is a little late to say this but I feel that this would be perfect for the wild update. Just imagine, you are walking through a dark oak forest. Peaceful music is playing and there are just a bunch of random birds flying around you. Like I said perfect for what the wild update is trying to achieve. But then something comes out of nowhere. It's a creeper. The new variant of the creeper that I am suggesting is camouflaged. It could be anywhere. You quickly run out of the dark oak forest into a normal forest. Then you hear something else you turn around and you see something behind you. It's a leaf. A literal leaf. The leaf can try to attack you if your within 15 blocks from it. You quickly run to a nearby swamp. You see something else that's new a muddy pig. It's just a pig that's muddy. But you need food so... Anyway there are so many things that could come out of this suggestion. You just have to find them!