As for themes: there seems to be an undercurrent of confusing language running through the password. Several (Aragorn, the Ring, my #13) have people using non-common languages; others (Ori, my #9, Tom Bom) have non-standard language use. Some (Bilbo, Saruman, Finrod) are being, or are noted for being, deliberately confusing, and I believe that only leaves Beor (who first appeared speaking an unfamiliar language) and Bard (who speaks Bird, as I recall).
This also fits nicely with both the password and the style.
hS
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