Current weirdness being acknowledged, I view Charisma as being more of a strategy mixed with skill set. One of my friends is the charisma guy, and has a skill set for reading the situation and the person he's trying to woo over. He reads the environment, see's points of entry, determines an approach and then gives his best sales pitch. This applies to all aspects of his life but in this specific example I'm thinking of him selling cell phones which he did at one point in life.
Once engaged he's trying to find out what the other person is needing and offer them that or a middle ground to slowly walk them to where he wants. He's a likable, nonthreatening guy. People often have a good first impression with him and people other than me call him charismatic. In this example Charisma acts as a tool that can be deployed. And he's trying his best to offer a RPG like chat scenario where he offers 2-3 options out each moving the interaction into a result he wants. A good deal of this is recognizing a bad interaction and cutting your losses and moving on to the next one.
Ultimately I think the audience votes if he's charismatic but the grade total of interactions is the grading verdict.
My personal experience at work I find leaders that won't tell you either how they feel or think personally distasteful. I think leaders that I find charismatic try to understand the issue, and solve the problem for big picture/long term.
I am also thinking of the term influence - which is related. I would not say I'm charismatic normally but I would say I'm an influencer.