The answer to your quite long question is that the chances of your registration as a British citizen are close to zero.
Simply put, UK's immigration and citizenship laws focus a lot of residency or some other form of connection (by birth, registration or naturalisation) with the UK itself. And that is limited to only a few generations outside the UK.
Let's assume, for the reason of argument, that hypothetically you were a CUKC at birth in 1982. Even if you were so (either by registration with a diplomatic post or automatically), you would still not have become a British citizen on 1st January 1983.
Because British citizenship for people born before 1983 requires them to have two separate statuses, CUKC and RoA.
Only people who had both CUKC status and RoA on 1st January 1983 became British citizens.
Right of Abode (RoA) was, at the time, limited to a maximum of two generations and required either the person themselves, either or their parents or any one of their grandparents to have been born, registered as a British citizen or naturalised in the UK.
RoA was, from the start, gender neutral and required either parent or any grandparent regardless of gender to meet the conditions above.
You fail to meet the requirements for RoA because your familial connection to the UK is simply too distant.
Therefore, even if you take the gendered history of nationality law out of the equation, you would have failed to become a British citizen in 1983. Therefore, your ARD application would fail.
Note that in the two examples you quoted above (Examples 13 and 21 of the
ARD guidance), the relevant grandparents were not just British subjects/CUKCS, but crucially born in the UK. That is the big difference.
To continue the hypothetical example above, if you were a CUKC on 1st January 1983, because you lacked RoA, you would have become a
British Overseas Citizen (BOC) on that date. That would have entitled you to a British passport and British consular assistance, but no right to live or work in the UK.
In actual fact, you are not a BOC because you weren't a CUKC on 1st January 1983 and there is no way to acquire it now (it is a residual class of British nationality which is supposed to die out eventually as it can't be passed on to one's children either).
EDIT: I didn't realise that I had already answered the question in an earlier post above.
I am not a lawyer or immigration advisor. My statements/comments do not constitute legal advice. E&OE. Please do not PM me for advice.