Attila the Mongoloid terror of the steppes got some bad press, but his wives still called him Hun.
:)
Nobody can tell at this point for sure, but the Huns were a Turkic (language groups related to modern Turkish) nomadic people. They tended to add lots of other groups to their “horde” of allies/vassals, so functionally, outside a core leadership group, they were a mixed bag. Somewhat like the Goths the Romans knew. They do not seem to have been Mongolian at all though.
The core Huns may have looked like some blend of modern Chuvash https://www.youtube.com/watch?v=O62CoTX6AJw and Azeris https://www.quora.com/What-do-Azerbaijani-people-look-like#:~:text=Armenians%20look%20like%20a%20mix,some%20lighter%20individuals%20among%20them.
Central Asia was an ethnic blender for millennia, so everyone was thoroughly mixed up even in Attila’s day. But I gather that 1500 years ago they were more “white” by our standards, than they later became, because that was before the Mongol invasions.