What is the lawful relationship of a woman and her daughters (married, divorced, mothers, grandmothers) to the man she marries, to his biological sons, and to his suckling sons, and what are the implications of that in terms of mahramiyyah (being unmarriageable kin) and prohibition?

The wife's daughters and her granddaughters are محارم (unmarriageable kin) to her husband if he has consummated the marriage with her, because they are his stepdaughters (ربائبه). All of a man's sons, whether biological or through breastfeeding, are محارم to his wife as soon as the marriage contract is concluded. A stepdaughter does not become محرم unless the marriage has been consummated, but there is no relationship of mahramiyyah between a man's sons and a woman's daughters.