Are they all bad, or state dependent?
IDK, but I think in general they all favor the mother; some horror stories of women who are awarded custody of their kids, getting involved with drugs and prostitution, which eventually leads to their kids being abused.
I can only speak from my own experience...
I did fight for full shared custody without conditions and got it; however, the state is required by law to assign one parent the primary...so if we ever disagreed on a matter for our kids, her choice/decisions is supported over mine by state law.
When we divorced, my ex was a stay at home mom for many years, there's a legal concept of accustomed lifestyle - I forget the real term - that requires the parent with primary custody to provide the same lifestyle for the children, and by extension the primary custody parent. Guess who has to pay for it? In my case, me. In general, stay at home moms get more in divorce since they have no income of their own.
The court decided that half my income at the time would go to alimony and child support, and that the combined amount would continue for 4 years after my youngest turned 18 after which time both would end. According to the law, in most cases here, child support ends on the child's 18th birthday. My family court judge thought different, and added 4 more years of child support because she could.
Even after my ex-wife went back to work (she's an attorney FWIW, corporate attorney) for me to go back to family court and update things in my favor, I was advised that there was a high probability I would lose more and have to pay more. It would likely cost me a small fortune in attorney fees if she decided to contest it....and BTW, I had to pay her attorney fees for the divorce too.
Welcome to the matriarchy!