I tend to view Hoarding as more of a symptom than a disease. It’s often a sign of depression. There’s also degrees, where some people hoard things that at least have some objective value to outsiders while others truly hoard junk.
Neat freaks are nice to visit but extremely difficult to live with. I think for a marriage it’s good to have similar preferred degrees of messiness.
There’s a fairly wide range of what I’d call “normal”.