There did not need to be, the gods and goddess of ancient Egypt demonstrated that conscept very well; Isis in reviving Osiris and having a son Horus - Horus in taking the throne of Osiris/Set.
There is no ancient Egyptian god Zyopt.
Osiris was the usual Ancient Egyptian god of the underworld.
It largely depends upon which ancient Egyptian god - or goddess.
Ptah is the ancient Egyptian god of creation.
Yah is not a recognized Egyptian god in ancient Egyptian mythology. It is possible that you may be referring to Yahweh, the god of the Israelites in the Hebrew Bible. In ancient Egyptian mythology, the god Yahweh does not hold any significance.
The ancient Egyptian deity that was considered the god of the horizon is Aker.
The ancient Egyptian deity that was considered a war god is Anhur.
The bird associated with the ancient Egyptian god Horus is the falcon.
Hapi was the ancient Egyptian god which represented the Nile's flood.
Isis she was the Egyptian god of love and purity
The Egyptian god Seth is a real god of ancient Egypt.
Yes Thoth was a major ancient Egyptian god.