I would love to see a comparison between similarly aged mothers in countries with more equal gender benefits for child rearing (Scandinavia? France?) and those

I would love to see a comparison between similarly aged mothers in countries with more equal gender benefits for child rearing (Scandinavia? France?) and those where mothers are still the de facto responsible for the day to day labor. Part of this might be caused by the need for a two parent income to survive. It means that the default parent has two jobs, whatever their ambition might be.