Different subscriber/subscription export options and numbers that don't add up

I want to tidy up expired subscriptions and subscribers by deleting expired subscribers/subscriptions so I've been looking at the various export options to understand which ones will be deleted and to take an archive of them, but I don't understand the numbers of Active, Expired, etc they give me.

I can see five ways to export data to a spreadsheet. The numbers each give for the various states of membership are:

            Total    Active    Pending    Expired    Cancelled-Refund Pending    Cancelled-Refunded    Total Cancelled    Total
1 Export Expired Subscribers    Dashboard|Subscriptions Tab|Export Expired Subscribers    304                            304
2 Export Subscribers    Dashboard|Export Subscribers Icon    781                            781
3 Export Subscriptions    Dashboard|Subscriptions Tab|Export    781                            781
4 Export Excel Subscriptions    Dashboard|Subscriptions Icon|Subscriptions|Export Excel    781    224    13    540        4    4    781
5 Subscribers Report    Dashboard|Report Tab|Download CSV    582    226    13    341    2        2    582

See attached screenshot of this spreadsheet in case the formatting makes it difficult to read above.

I have 'Subscription Renewal Behavior' set to 'Create New Subscription' in the configuration.

So, some questions:

A) 2 and 3 seem to create the same spreadsheet, despite one being subscribers and the other subscriptions. I don't understand why these are the same: shouldn't there be more subscriptions than subscribers?

B ) There seems to be a difference in the way Cancelled subscriptions are counted in 3 and 4. Is there a reason for this?

C) Why are the Active numbers in Export Excel Subscriptions and Subscribers Report different by two? Is this something to do with the way Cancelled are counted?

D) The Export Expired Subscribers gives 304 expired subscribers, so why does the Subscribers Report say 341 are Expired? Shouldn't they be the same?

E) I'm not sure why the number of Expired in Export Excel Subscriptions (540) and Subscribers Report (341) are different by 199 - is this because there ARE multiple subscriptions per subscriber?

I may have a few other questions but any help with understanding these numbers may clarify a lot for me!

Thanks.