That is also possible, I wouldn't mind her being my dual. It'd be a more Fe-leaning subtype. However, on some other videos I quickly checked, she seems well put together, present and detail focused like SEI, and the science focus would really entice ILEs.
How she can modulate her voice to be very pleasing and expressive is something Fe creative and especially IEI are good at so there are points for that.
I have been watching her videos for quite a while now, several years, and discussed her type with other IEI online, who agreed with me. I often use her videos as an example for my friends. she has the same struggles that a lot of INxx types have, not relating to their enviroment.
https://www.youtube.com/watch?v=p4M6_uSGSMU
(notice how she reflects on her past in the beginning of the video, which is a characteristic of IEI, who like to relieve memories in their mind.)
her channel covers a lot of intuitive scientists, especially Ni-doms like Einstein, Tesla, Isaac Newton etc., and she has a rather artistic way of covering some topics, a good eye for atmosphere, which is extremly important to IEI.
I also found a german youtuber who looks very similar to her who I also typed as IEI, might be interesting for you to take a look.
https://www.youtube.com/c/Snukieful/featured
I agree with IEI-Fe
I have not seen much of Belle, but I have seen enough to get an idea of her type. She is quite reserved in interviews but uses very good Fe when she talks. I remember seeing a lot of people commenting on how surprised they were that they actually liked her when she was being natural. She also knows how to really milk opportunities she gets and make them last. Not to mention that she has proven she knows when initiative is appropriate (not revealing anything that could be considered hardcore porn until recently I think). Seems very much like Ni lead to me.
She sort of sucks people in with her cutesy raunchy charm and then milks them as long as she can. Very NiFe. Not to mention she needs good 4D Fi to keep people around after luring them with her creative Fe.
And that “SEI” persona people point out probably isn’t even much of a persona. If you look up her house you can see that yes, she is very attentive to environmental aesthetics, but it’s more fable-like and lacks that Si homeyness. I have actually imagined creating extremely similar (almost identical) environments for myself and would love to if I could. Don’t know much about DCNH yet, but maybe harmonizing subtype?
Yeah, I might actually go with IEI-H for her.
EIE is considerable.
However, looking at dimensionality convinces me she has 4D Ni and Fi. It’s been a while since I saw her, but when she is being a bit more socially reserved, you (or maybe just me lol) don’t see many visual indications of 4D Fe. Her Fe comes across as very situationally focused to me and not like a constant state of being immersed in “the emotional tide” so to speak.
I think this girl is similar to Belle and probably EIE, which should illustrate a good comparison:
https://m.youtube.com/user/HarassingHarlow