The worst mix ever existed is from countries where feminism grew on a catholic sub base, think of spain or italy...hard to find worse trash.
Eastern european women and scandinavian women (except for sweden) are the only one Im comfortable with, outside of them I basically live monk mode.
Wheter we talk about behaviour or look.
You are definitely on to something here, it is the case in the United States as well where I would argue that some of the worst trash among white women in our country are Italian American women in the northeast in particular (granted some don't consider Italians white). I do think there is a link between Catholicism and feminazis, it is that added entitlement as well because Catholics are sexually restrictive people and women get spoiled in these cultures.
One exception to this rule, for some reason, Irish Americans who are largely Catholic tend to produce decent enough women. Having grown up in Northeast USA, I found Irish girls to be more down to earth, cool, chill, and fun while Italian women were often entitled, bitchy, snotty, and had that bitter vibe that ruined every room it walked into. One other part of Italian culture I notice in the US is that narcissism and devious acts are through the roof, they are quite under-handed in many ways and will use blackmail and threats to get what they want, plus most of them are in the mob anyways which is still pretty strong in America.
I'll add though, it does seem like Catholic culture and countries are breeding groundings for psycho women and sociopaths of the highest degree. I'd argue that women from Southern Europe personality-wise are far worse than American women.
To make matters worse, Italians can be like a plague, they spread far and wide. The men are often going to Brazil and Eastern Europe in hordes like refugees harassing women although in a more subtle way.
I have argued for the longest time that sexually repressed cultures are breeding grounds for pure evil and the worst of attitudes among both men and women.