Animal hoarders, junk hoarders, and extreme neat freaks, who has the largest psychological problem?

I have heard more than once that people who hoard pets, or stuff suffer from depression, AHAD, OCD, etc, I somehow don’t believe they all have some mental distress. What of those people who are anal neat freaks, would anyone say there are mental problems there? Those whose homes look like they are ready for a photo shoot with Architectural Digest, everything looks stages and arranged for viewing. All the towels hanging even, and balanced, all the cans stacked according to height with all labels facing outward, no dust, no fingerprints on any shiny surface, carpets which have to have knifed in vac patterns, and if it can’t be arranged it is hidden out of sight. Is that as bad as hoarders even though it doesn’t appear as bad? Would a child growing up in such a sterile environment not suffer something, even if not as much as a home filled to the brim with clutter?