In the 1832 revision of Byzantine music, Chrysanthus of Prusa came up with a Greek equivalent of solfège, using the same derivation from acrostics of a hymn. So: Pa Vou Ga Di Ke Zo Ni.
To my surprise, there’s no decent online source on this (https://thmodocumentation.files…. p. 6 has the info in Greek).
EDIT: I say acrostic, but it was a rigged acrostic for the occasion. Chrysanthus’ actual intent was to put the first seven letters of the Greek alphabet into a set of CV syllables:
πΑ Βου Γα Δε κΕ Ζω νΗ