Yes, yes to all the above.

Get statements from all your doctors/therapists and add them as formal attachments.

In referring to your diagnosis/diagnoses, it may be valuable to use the formal DSM-IV-TR (or ICD-10) coding.

Hopefully your psychiatrist will have some sort of GAF (Global Assessment of Functioning) history for you: Year/Month A = 90, then later = 75, later = 45, reached a low of 40 year/month B, following initial treatment for x months/weeks GAF rose to 50, now GAF = 70 (you get the idea).

All this stuff is EXCEPTIONALLY private and in the US is covered by HIPAA Privacy rules. Make sure the collected documents have a cover sheet clearly indicating the contents represent "Privacy Act Information" or "Handle in Accordance with HIPAA Regulations."