Name means “king of righteousness”

מַלְכִּי־צֶדֶק

malkî-ṣeḏeq (H4442) "righteous king" (see Ts-D-Q and Rulership)

from מֶלֶךְ melek (H4428) + צֶדֶק ṣeḏeq (H6664)

King of Salem

melek 🤴

שָׁלֵם šālēm (H8004), AKA Jerusalem

שָׁלוֹם šālôm (H7965) peace

יְרוּשָׁלַם yᵊrûšālam (H3389). Ezra and Daniel alter verbs: יְרוּשְׁלֵם yᵊrûšlēm (H3390)

Priest of God Most High

כֹּהֵן kōhēn (H3548)

אֵל ēl (H410)

עֶלְיוֹן ʿelyôn (H5945)

later kings of Jerusalem

אֲדֹנִי־צֶדֶק 'ăḏōnî-ṣeḏeq (H139) Adonizedek appears to be a successor

reminds me of Priest-Soldier parallel, but a lowly Nazar-ish and lowly grunt