Some new names & "significance":
Faraday - known for his work in the field of electromagnetism.
What did Daniel Faraday observe on the island?
A "man of science", probably not coincidentally being "held" in Jack's group.
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(CS) Lewis - Charlotte Staples Lewis. Originally atheist, CS Lewis embraced Christianity - a "man of faith". Probably not coincidentally being "held" in Locke's group.
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Abbadon
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Dorrit - Naomi's last name.
Not really significant to Naomi, but you could stretch the bolded stuff to relate to the people on the island - the "reasons" the Losties are there (i.e. personal issues/flaws/whatever ["debts"] that need to be sorted out), as well as "class" separations (Losties/Others, Jack's & Locke's groups).
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Nothing of note (that I saw, anyway) for Straume (Miles) or Lapidus (Frank).