Angels, Demons & Social Memory Complexes... Differences? Similarities?

[Silk]

I'm wondering what the differences are between Angels such as Michael, Raphael and Gabriel and that of Social Memory Complexes such as Ra. As well as similarities between them.

It may be worth pointing out that the term "angel" derives from the Greek word for "messenger, envoy" (angelos). Similarly, "demon" also derives from Greek for what may be vaguely described as a "ministering agent, divine power, lesser god" type of phenomenon (the negative connotations were later attributed via Christianization—especially as the diametric opposite of angel).

Generally speaking, an angel may be:
a) a hi-D entity/group (4D, 5D, 6D) acting as "guardian" for a time
b) a discarnate 3D Earth "guide" or "ascended master" type of entity
c) a complex, multilayered "thought-form" that draws its beingness from a very specific racial branch of the collective human mind/subconscious (all those given names ending with the "-el" affix could fall under this category)
d) your so-called "oversoul" or "higher self"
e) your postal service courier ;P

Their similarities begin and end in service.

However, there are also "portions" of the Creator which were/are created for the sole purpose of administering, watching over, and tending to aspects of the Creation and entities developing therein. These "agents" of the Creator are not part of evolution as are Ra and other ETs. They are less an "entity" any more than simply a specialized/localized "function" of the Creator (often anthropomorphized).

How does one properly conceptualize these different groups of entities according to the Law of One?

They are all the One Infinite Creator under the Law of One. If, on the other hand, your question was more specifically pertaining to the Ra Material: not much was devoted to the discussion of such figures in a Biblical/Hebrew sense.