No one in my family has been IP that I'm aware of, but plenty have been incarcerated for substance abuse/drunk driving. I'm not particularly close to any of them other than my maternal grandma (when she was alive) and my dad.
My dad: Major addict, got put in jail twice both times he was drunk once he stole a truck. Possibly bipolar. Went on a spending spree and bought three generators even though he already had one and spend $800 on slot car racing stuff in a span of a month. Uses other substances as well.
My paternal aunts: Three with bipolar 2. Two are estranged and the one I talk to is a drunk.
I have a maternal aunt who had substance abuse issues and
She had a good heart, but hung out with a bad, bad crowd.
Cousin on my dad's side with severe substance abuse issues.
. Homeless currently, whereabouts unknown.
Cousin on my mom's side with panic disorder.
My mom's mom also had panic attacks. She took Xanax for them. She was psychologically addicted to them but not physically dependent on them.
I think that's about it.