Me and my sister were raised the same. We have different fathers, both absent, so just raised by mum.
My father walked out when I was tiny, had a second child with another woman (a year between us), fought for custody of me when I was 3, didn't get it, had another two biological children with two different women. He now lives with his wife and raises his two stepchildren whilst having no contact with his biological ones.
My sisters father isn't alive, but has been my dad since I was young. Not the nicest person, got violent and abusive easily etc.
I was a screamer as a baby, well behaved child, used to cry if I got in trouble, never bullied at school, always had alot of friends. Now as an adult, i'm quiet, always helping people and care a little too much.
My sister never really cried as a baby, outspoken, confident child. However, bullied at school, has no friends and literally lets people take complete advantage of her. She doesn't really have the same boundaries that I do.
We are so different, but we're both kind, always willing to help and really caring people. Neither are similar to our fathers though (I'm horrified at the actions of my dad!). We also have no memories of our biological dads (sisters dad died when she was young, never saw mine)