I tried to learn more about this and ended up doing a lot of interesting reading about various symbols in various cultures and seemed to have found that in many cases there were amazing levels of conservation, and diversification of a rather limited number of symbols in terms of specific personages or spirits. As if in many cases the same spirits were accessed by different cultures and while being called after different names, the names often had common meanings, and the spirits having remarkably similar personalities, properties or aspects and appearances or evocations.
There is a symbol, widely conserved, that is described variously as a gateway or a crossroads, it has distinct yet coinciding properties making it as a state, a place and a doorway. This gate is rather easy to reach, but difficult to pass, for most who encounter it do not know it for a gate, but for a place, and do not know of or invoke the keeper of the gate or crossroads, who isn't saint Peter by the way, but saint Peter has been used as a symbol for him to hide reference to him from western cultures.
This place or gate is also as a place of visions, they come through the gate, so to speak, but the gate is also like a mirror.
In general the visions are personalized, while the manifestations of the spirits are less person specific. It is very difficult to identify personalized visions for another person, though some are skilled at it, it is not easily done with media such as reading what someone writes online. However there do appear to be potentially identifiable entities, or personalities or spirits... these are easier to identify and interpret in terms of symbolism.
The first question to ask is often for a description, as in: Visions of what?