This sounds like a truly bizarre list to me. What made you pick them?
Dobermans aren't typically used as SDs. Two key reasons: first, even with very active socialisation and training from a young age, they don't tolerate strangers too well (super protective), which SDs have to do every time they're out working.
Second, they need a shittonne of exercise (think having your dog running alongside you while you cycle for at least 40 minutes a day), and mental stimulation to keep them from getting bored (which again, SDs have to tolerate reeeeeally well, since a big part/most of their job is lying quietly beside you wherever you happen to be). They get irritable without sufficient exercise or if they get bored, and when irritable, are prone to aggression because of their breeding (being alert and protecting shit comes as naturally to them as herding sheep comes to border collies).
Most people with a disability can't commit to that kind of daily exercise regime, and don't have the background in dog training that a doberman is likely to require to make a safe SD option.
Are they truly loveable and affectionate towards their immediate family and absolutely stunning looking dogs? Absolutely. But will they tolerate idiot strangers every day and long periods of boredom at your side? Nup.
Is there a reason you've chosen a Doberman for your list? Poodles require a lot of exercise, but nothing like the kind of exercise required to satisfy a doberman. They also tend to loooove attention from strangers (super helpful quality with SDs), and if exercised adequately, will be quite happy to lay beside you for long periods of time. They don't tend to need the kind of skill with their training that dobermans require because of their breeding history...
Poodles have their own issues (epilepsy comes to mind - sadly common, so get the lowdown on your breeder). But in terms of the amount of work and skill required to transform them from pet to SD - they're a cake walk compared with dobermans.