I never liked "supernatural" or "psychic" or even "spiritual." Too much baggage (especially "New Age"😉 with each word (I don't like "divine" either).
I tend to use "transcendent" because I think it has the least baggage, and also it's the coolest looking/sounding of these words. 😎
Now labeling things like, eg, "Level I, Level II, etc" is probably the most neutral approach, but also the most boring.
And while I do like using familiar words/terms in new ways (eg, using the Greek four elements to label the levels of reality), this would be largely for aesthetic/mneumonic reasons.
But generally I agree: there's "what we know" about reality and "what we don't know." The Whole is organic; distinctions are artificial/temporary.