Greetings!
I work for a CU that also uses JHA. When you say that you want each product to be its own individual file, are you thinking along the lines of each
product has it's own separate Vendor page? If so, the only thing I could think of would be to change the name of the
Vendor to something unique, like "Jack Henry - Banno" and then have the product "Banno" - although I don't know that I could personally recommend this and not sure what adverse effects it would have, if any. We do not have nearly 53 products with them, so I sympathize with your circumstance!
Regarding the latter portion, you may already be aware of this, but JHA has a pretty robust client portal where you can get all manner of due diligence documents such as SOC reports, incident reports, sample insurance, etc. If you don't already have access to this, I would highly recommend reaching out to your point person (perhaps the executive mentioned below or a member of your IT department) to gain access.
Hope this helps, I am a bit of a novice myself! :)