I don’t understand your remark about “intentionally obscured” (never mind how an absence of replies could prove anything at all). To me, what you’re looking for is obscured. When you asked for “cool lingo” I thought you were calling for a certain kind of word—not just slang (lingo: “the language and speech, especially the jargon, slang, or argot, of a particular field, group, or individual”) but cool slang.
Presumably cool contemporary slang, not slang of forty or fifty years ago.
It seems to me that others have interpreted your question the same way.
If what you wanted was words that belong to the standard lexicon but that might be new to you, that’s a different question. I encounter new words all the time in my reading, and hardly a day passes without my looking something up in a real or virtual dictionary. Here are a few recent ones, culled from my reading journal:
vespine
hypogeal
irredentism
velleity
And here’s one that doesn’t stick no matter how often I see it or how often I look it up:
tranche
I do happen to know a lot of words, including jargon specific to a few fields, but I can’t say that any of them are cool.