But sometimes names and their connotations catch my eyes
I think you're on to something here, shahabgh66 in terms of what I want to call a sort of convergent evolution of linguistics. There is a universal need to define spiritual concepts, and the ways we wield language lead to symbols that converges upon common metaphors.
For example, prior to their adoption of Χριστιανός (Khristianós or "Christian"), worshippers of the Christ simply referred to themselves as followers of της οδου (tês hodoû) or “The Way“. Thousands of miles away, separated by centuries, a group of ancient Chinese philosophers, alchemists, and mystics followed the universal 道 or (Dào”) meaning “road”, “path” or “Way”.
There are other examples (such as identifying "God", literally, with "Wisdom")
There is an interesting study done on the development of words referring to color (as an example). The study was published in a book by Brent Berlin and Paul Kay called Basic Color Terms: Their Universality and Evolution (1969). Essentially, they demonstrate that isolated groups of humans will develop words for color in a predictable pattern: cultures with only two color words only had words for "bright" and "dark". With third word, it is always "red" (etc.).
In that same way, I think (in the development of language), different groups of humans are compelled by psychological needs to express certain, universal experiences, like the experience of dreaming, of being intoxicated, or experiencing necrosis, or witnessing others' deaths.
Along those lines, as Epicurus recognizes in KD5 and KD6, the structures of society, leadership roles and economic exchanges, develop naturally out of a common benefit. Therein, different groups of peoples exalt admirable, magnificent figures characterized as being "helpers".
We all have some word for "soul", and that word always seems to correlate concepts like "personality", "awareness", "will", and "the part of us that's 'awake' when we dream at night". We (apparently) have a common need to express "spirituality", and that word always seems to correlate concepts like "psychology", "self-help", "art", "meditation", and "the need to organize mental phenomenon during times of over-stimulation". There are many other examples.
While the particular characteristics of the words differ depending on the filter of culture, there seem to be universal, pre-conceptual notions that we are compelled to identify by need. The common notion of "the religious experience", of "the divine nature", or "the gods" falls in this category as a universal experience that isolated peoples share.
In this regard, I suppose that the archetype of a "savior", a "guru", or a "helper" might be one such common notion, instigated by a universal need to express the experience of a "spiritual guide". We all have personal role models, and groups of us have universal saviors.