That's fine, it's your thread. But not many people here are going the have experience with shooting multiple people with both HP and FMJ ammo, so most of this discussion is opinion based. I only offered my experience with hunting because .22's have a similar velocity to many handgun rounds, animals are flesh and bone like humans, and I HAVE shot many different animals with both types of ammo and I think the information applies to self defense rounds and humans.
And I don't really trust medical professionals on this topic, very few are the type of firearm enthusiasts that we are on this forum, most probably couldn't tell you the difference between a 5.56 NATO and .45 ACP if you asked them. Let alone the difference between a FMJ, HP, HPWC, JHP, LRN, or SJHP, even after pulling a mangled sample out of a patient. Their job is to save people, not determine what bullet injured them.