Okay,then i would disagree that those characters that i listed with cool powers and are OP are seen as white-coded.
Most are all of them don't have humanoid form as well.
Most of those non human OP characters have not appeared in live action or animation by the way.
Gladiator was shown in x-men voice by white actor i think but he does not look white or drawn as white-coded.
Celestials were shown in the mcu and ego was shown in one form was shown as white,a few times not when he was getting with other alien women and his other form was a planet,his true form.
The other celestial shown in gotg was shown in it's true for,
The beyonder when not shown in true form in comics and animation he chooses a white look most of the time(so most of the time he is seen as white) but the beyonders are a different story and have not shown to do that.
Captain universe has been poc alot, more so lately.
Icon in his original form looks like non white and of course his current form is black and spawn is a black man from earth(not our earth of course).
Most aliens in dc and marvel for example do not look white or are not white-coded,but i think most are seen as white is because the white ones get the most focus in comics and other media like thor,superman etc.. but most created overtime are not white or white-coded.
Check out the links below.
https://marvel.fandom.com/wiki/Category:Races_of_Aliens
https://dc.fandom.com/wiki/Category:Aliens