Queer coding doesn't necessary mean the character has to be queer, they just have to express stereotypical queer attributes, like wearing makeup (check), being sophisticated (check), having a flair (check) for the dramatic (check) being sexually confident (check) or even aggressive (check), displaying style and grace (check) while being intelligent (check) but not physically strong (check). Then there is the typical Disney-villain-physicality which also reads as queer coded, heavy lidded eyes, tightly trimmed beards, long faces (just look at Jafar and Scar next to each other)

In Jafar's case he was animated by an openly gay animator and sang music written by an openly gay lyricist, both visibly had a lot of fun creating this fabulous mess of an evil sorcerer.