Where does “twt-ꜥnḫ-jtn” come from?

twt-ꜥnḫ-jtn (Egyptian) comes from Egyptian twt, from Egyptian ṯw, from Egyptian tj, from Egyptian jsṯ, from Egyptian sṯ, from Egyptian sk, from Old Persian 𐎿𐎣 — Saka and Scythians, a nomadic people of the Eurasian steppes.