Do these tests say you have all these things? Never taken one, but it sounds a bit irresponsible. I'd just say you suspect you have bipolar or schizophrenia based on some tests you've taken and some information given to you by some who have these disorders.

If you have access to a (university) library, I'd suggest you read/use the DSM-5 Handbook of Differential Diagnosis or (if they don't have that one) the DSM-5 itself and start with the criteria for BP and schizophrenia. Only if there are problems you have (and which are truly severe) which aren't listed there, you may look at the personality disorders to see if your remaining problems are listed there.

If you use the Handbook, which (like the actual DSM) implicitly describes/uses a hierarchy, ADHD "should" be ruled out first because it's more "organic" than BP and SZ. In my humble (yeah, right) opinion, while that is arguably true of BP, SZ is as much a developmental disorder as autism spectrum disorders and ADHD are (maybe more so in the case of ADHD).

Brain trauma, acute damage/injury, should also be ruled out. If you're always in a pretty severe state of psychosis (of which you may only recognise (some) hallucinations as such) or you have energy and appetite regulation problems like those seen in BP, but not both (at least that would be rather unlikely), that may be the underlying problem. Severe lack of concentration (which may appear like ADHD) or the inability to use certain types of memory could also be a sign of this. But you'd probably know about it if you had a problem like this.

Substance-abuse should also be ruled out.

If you have a personality disorder, it's likely BPD. But it's difficult to know whether you have it based on the criteria in the DSM.

Just ask more questions and read more and keep an open mind. We are biased: people tend to see what they know.

Do you smoke? Do you drink a lot? Drugs? Done so in the past?

I know nothing about NAMI, but I'm sure they can't diagnose you. They may be able to help you regardless.