I am still wearing my flak jacket from yesterday so might as well bite on this too.
I think that we have a general problem with over-clustering, which affects how we talk about ADHD, ASD, depression/anxiety, and a host of other issues including "disability" itself.
What do I mean by over-clustering?
I mean grouping people into very broad categories where the needs of the most and least serious in the group have very little in common, but the group is always discussed as if everyone in the group has the most serious version.
I've known people with very severe depression, usually after severe trauma/illness. I agree it's really debilitating and almost impossible to escape without treatment, often meds. (Likewise severely autistic non-verbal incontinent people, wheelchair bound paraplegic people, etc.)
But it's just obvious that not everyone who is depressed, including not everyone who has a diagnosis of depression, is this level of disabled.
And it's unhelpful to always just talk about "the disabled", instead of in more specific profiles like the A-E profiles the OP of this thread used, that just cast so much light on the actual people and their needs coming through these services.