I strugle to fit myself into any one of these (my mum's the same) I get both stimulated by and tired from interaction, I need to recharge and have my own headspeace, but too much alone time leaves me feeling stagnant, like I don't have enough stimulation. If I can have a little stimulation fairly regularly, or lots of stimulation somewhat less regularly, I feel alright. I fit into the notions of being a shy extravert and clear introvert at different times and with different people. If I'm comfortable and I feel the other person's comfortable with me, I am more than fine being incredibly reticent - when I stop being so talkative around people they tend to ask if I'm okay/why I'm being so quiet, sometimes there's a reason, sometimes I just don't feel the need to be talkative, - however I do have a natural tendacy in quite a few other situations to feel like I need to be entertaining for the person, I start feeling anxious if I can't fill gaps, and find it hard to know what to say to people. But I do enjoy conversation, even small talk when I'm in the mood for it/have the energy/feel the other person's intentions are actually of interest.
My first experience of people my own age (4-7yo) in a social setting - School - was a negative one. I had a long period of something like 3-6 months off because of illness, and I was a strange kid - an oddity, but not bullied, just different and that was just how things were - and of the few friends I had, my closest one, moved to a different school, and the others were in different years.
I moved to another school, I made some friends and got on well with more people. My best friend was very clingy, and I'd always been used to a pretty introverted, very unclingy family. Some of the kids teased me and my friends a bit, but only as badly as kids do.
I was in a fair number of clubs through my childhood and into adolesence, and I always had the experience of sort of being accepted, but also being weird, on the sidelines, and sometimes openly disliked/completely misunderstood - not percieved as a horrible person, just that they didn't get me - I've had a couple of occasions where people seemed to be bullying just me, minorly enough that I'm not sure they would have recognised it themselves, and I don't know if other people generally would have noticed. Once I didn't notice it; my one friend in the group reported a couple of girls for bullying me, without telling me how she felt about it before hand, though she did mention a couple of times she thought they were mean, but I never realised how strongly she felt, so I was really surprised and only considered it at this point (In this case I think it was just a couple of girls who didn't really understand me/found me irritating and were a bit harsh, but it didn't feel like they were bullies like other occasions I've witnessed bullying. The girl I was friends with was some kind of feeler, possibly an SFP or INFJ, the girls were probably E_T_s) the other time I did notice it - largely it was just different in personalities, they were a group of ES_Ps, and I was the sort've odd and slightly quiet ISFJ who liked to read books and didn't want a boyfriend.
Before this point - maybe around 10/11ish and before? - I'd more just been a bit of an oddity, but not outright disliked. By the point I joined these clubs I had started to suffer low self-confidence and a degree of paranoia and anxiety, though not to socially-anxious levels - I'd presume people wouldn't like me, though get reassured by people talking to me, but also started finding it hard to talk to new/newish people/approach them.
I remember as a young kid at first being frustrated by mostly having to stay at the dinner table whenever we had meal at my grandparents on my mum's side, when the adults were talking. They probably wouldn't have minded if I had left, by I was pretty literal with instructions as a kid, and when they'd jokingly say 'You're getting up to leave the table?' or say I ought to wait for others to finish first, I got the implication that I ought to wait. I started off getting bored, but over time ended up just going into my head, that plus a non talkative family makes me wonder if I've simply grown up in an environment which has trained me to be a bit quieter than another more extraverted one would be.
I can be both talkative and energetic and not think much before I talk when I feel very comfortable with someone and they are talkative and confident - this is pretty/very rare, or quite happy to just not say much, or very anxious and want to fill the gaps, but tired/stressed by interaction, or very energised by interaction, or restless/anxious/unstimulated when I don't have enough stimulation, and also stressed out by interaction. I'm starting to feel more comfortable with not being talkative with people, so I wonder how much of it is underconfidence/fear, and how much is extraversion/interaversion. I'm also starting to notice that interaction in a positive manner reduces my general anxiety and restlessness levels, and improves my sense of well-being. In the group environments people very largely seemed to be extroverted - so when I was quieter their reactions would be more negative or confused or I'd end up with no one to talk to at all, but I still feel both traits in me to an extent sort've naturally in terms of energy.