^I’m still not convinced it’s as blatantly (and truly) racist as it’s made out to be.
I don’t think it’s intentional. But I think George is fired up by nostalgia for the sorts of things he liked as a child and we know that some of that was serials from 1940s where depictions of ethnic groups and women were more broad.
What he seems to have tried to do here is keep the ethnic stereotype but reflect it onto an alien species or character. Jar-Jar is Stepin Fetchit but with a weird frog/rabbit body. The Trade Federation are cowardly, sneak attacking, robot obsessed, slit-eyed Japs, Watto is Alec Guinness being a Jew, not a Jew being a Jew. Women wear makeup and clothes and have babies (without sex) at a push they work in libraries. Alien women can twirl swords but only if the wear less clothes or say nothing.
I suspect this to be more because George has a very unsophisticated world view which if tempered by a team of advisers prepared to say no can lead to movie magic. If not can lead to disasters. Compare Brody and Sallah in Raiders to the same characters in The Last Crusade. In the first film of that series those characters were characters, realistically feeling people. In the third film they are broad cultural stereotypes played for laughs. Certainly not the same people.