What should be in minecraft Mounts of mayhem version

They should add a zombie variant of the chicken for chicken jockeys. they should also add

the bone spider back so you can make arrows there should be a wither one too.

there should lastly be a way to ride the mobs that are part of a jockey similar to how you and drowns can ride the nautilus this includes a non-zombie variant for you and a zombie variant for zombies and so on.