@Smileyrius,
Since the Septuagint uses the word
Hades to translate the word
Sheol into Greek, I wouldn't think differentiation would be involved.
The word
Hades is used originally in the New Testament texts, however, with differing usages, e.g. Luke 16:23, Revelation 1:18, Matthew 11:23, Luke 10:15, etc.
In regard to Tartarus 2 Peter 2:9 states, "The Lord hath known to rescue pious ones out of temptation, and unrighteous ones to a day of judgment, being punished, to keep" (Young's literal translation). It does not refer only to angels but generally to "unrighteous ones."
I don't know what you mean by "external influences," as if the bible texts were written in a vacuum.