How to Manage View Title according to Contextual Filters
I can't quite make out all your requirements from your description - but I do have an example that (possibly) comes close to this. I don't use contextual filters though - I use Exposed Filters to identify which of 150 Contribution pages - specific Donations belong to:



Note that the URL in this case is:
/donations-via-group-contribution-pages?financial_type=All&amp;contribution_page=43

So you could pass in that URL (or for any other contribution_page_id) -> and then have a screen for a sub-organization; 

Thus far I've only used contextual filters for Drupal Commerce Views -> with a Contextual filter for Drupal userid -> so that we can then have permissions to only show Orders that belong to a specific user;