Bhairitu, There's an Indian guru by the name of Dr. Pillai who calls these gods, including those recognized in Egypt, as archetypes. Whatever they may be, some humans were able to perceive them in one way or another. And, apparently the humans who saw them perceived them to have some common characteristics as discussed in the vedas or the Egyptian scrolls.
Even today, there are shamans in the Yucatan Peninsula or the Amazon who can guide outsiders to see their gods in replicable experiences through the use of hallucigenic plants like peyote or ayuhuasca. My point is that these gods may exist in the higher dimensions of space and consciousness. However, they cannot be perceived in the basic space-time continuum.