This is HN - the bubble of Silicon Valley and venture capital. I can tell you with great certainty it is incredibly uncommon to encounter people in HR who will

This is HN - the bubble of Silicon Valley and venture capital. I can tell you with great certainty it is incredibly uncommon to encounter people in HR who will tell you the reason why X person left the company. In a region that is happy to do lawsuits - they don't bother. After all - it's no longer their issue. They'll just verify dates of employment and that's it.