*Edit: I checked some of the stuff more out in detail. While some concepts on this are valid and backed up by sience, others like RSD are not. Use this as a springboard for learning, not as a valid source in itself. Yes it says so in the corner already. But spelling it out might help.
People are more complicated then a diagram from the internet. Never forget that.
These are all spectrums. Experiencing all of these symptoms is normal. Experiencing these symptoms frequently and with such high degree that it impacts your daily life - that is a disorder.
I am not a doctor. This is not medical advice.
For me (who has all 3) the items on that chart aren’t symptoms. They’re personality traits.
I think they fail to be traits when one has no control over their remediation. At which point they become neurological disorders.