my own experience was "instant alcoholic, just add alcohol".
My father was a major hoarder and my mother was very codependent. When I originally went into recovery the first time (in 1986 for 6 years) my addictions counsellor likened me to an ACOA. We didn't have the term "hoarder" to use back then. I have checked out acoa information and I fit quite well into the definition. My childhood was a mess of denial, secrecy, shame, enabling, etc. but neither parent drank.
Just my experience.