"Moloch" only means "Lord" in its essential consonants. It's the same Semitic triple-root for "Malik" and "Melkite" and "Melchizedek". Cognates: certainly still in widespread use today as forenames and surnames, et. al.

"Leviathan": The full name certainly strikes fear. One of my ancestors brought his family over from Scotland on the Leviathan which was a captured-and-repurposed German passenger vessel. We can imagine: it was ginormous. has an interesting derivation if we take it apart into component parts: they would be recognizable as good guys, or denim jeans I guess. Since Semitic roots standardized on the triple-consonant, we may see ancient tongues incorporated for this one.

"Be-el-ze-bub": "Lord of the Flies", of course; the implication of the English name of the novel about those good children on a desert island, who lived in interesting times. A theophoric name. Shares a root with "Ba'al" of the Tanakh. Glottal stops FTW.

"Nazgûl" -- mainly sounds like "ghoul" to us! https://en.wikipedia.org/wiki/Nazg%C3%BBl#Etymological_conno...

Godwin's Law endures