Thoth became credited by the ancient Egyptians as the inventor of writing, and was also considered to have been the scribe of the underworld; and the Moon became occasionally considered a separate entity, now that Thoth had less association with it and more with wisdom.
The god Ammon, who is usually shown with the horns of a ram, was initially venerated by Libyan desert tribes only. He may have been related to Ba'al Hammon, a god of the Semitic peoples (e.g., the Phoenicians and Carthaginians). However, this is just a hypothesis, based on the similarity of the names only, and we can not be really certain about the origin of this cult - as is nearly always the case when we discuss an aspect of ancient religion. The cult was taken over by the Egyptians, who identified the god with their supreme god Amun; they called god of the oracle "Amun of Siwa, lord of good counsel".