[[[ 1) the person of Jesus as a historical figure of Jewish cultural heritage(if he did indeed exist at all) - needs to be overstood in the context of Judaic beliefs as you have pointed out ]]]

looking at Christianity from an Ethiopian point of View, Haile Selassie I and the rest of his family
were direct descendents of David and Abraham, last time i checked that made them ISREALITES.

so that answers your question, the Christians of the Ethiopian Royal House of King David are
ISREALITE JEWS.

[[[ 2)the idea of virgin birth in the context of Roman and Hellenistic thought which was a product of Egyptian ideas.

Ideas were mixed and mashed with the result of a confusing story in the bible if one takes it literally. ]]]

if I take break up the human into it various elements, and say well
since apes have arms and legs, and pigs have hearts, and since all thee were
before the human, then i know the arms and legs came from the ape
and the heart came from the pig to make up the human.

does this logic make sence. nope
the pig has parts that are similar to the man, yet there are many parts
that are different from the man, thus making the pig a pig
and the man a man. the same logic applies to the ape.

so like i said before, your logic is flawed because you fail to point of the great difference
in these spiritual orders as well.