Before I became a SAHM we were 50/50. Now I do the most of it by choice during the day a- cause I'm here and feel silly ignoring what needs to be done so I may as well make myself useful when I can and b- cause i like to spend time together with the fam over the weekends so having more time to do this without cleaning is a bonus
DF plays his part in other ways. He spends time with the kids and gives me some space when he gets home. I do dinner for the fam while he feeds the baby hers and then gives the kids a bath and so on.
We were very clear about what to expect when dd came along and that my job now is raising children. Any domestic chores that get done on top of that is a bonus.