Well, let's begin. Their archetype is logical.
Their thinking somewhat resembles the "logic" skill from the game Disco Elysium. It is extremely important that in spite of their logical thinking, they are not closed-minded. [1] (Many "smart" characters are withdrawn, cold. ) Toosaka is a stricter version of such an archetype, and Tina is a more flexible version. Logical thinking is clearly spelled out, voice and design match the character. If I try to characterize them, I see them roughly like this:
Logical (they primarily think about things and actions, not human feelings)
Inquisitive (they ask questions: both verbally and non-verbally - through tone of voice, gaze, etc.)
Reliable \ Confident (they are confident in their skills and words, again, you can tell even non-verbally, you can count on them)
Mischievous (they're a little bit funny).
These traits create for me the image of an unhurried, confident girl who asks questions and explains something if the main character doesn't understand. And the image is expressed not only in personality traits, words, but also non-verbally - in behavior: the way she constructs phrases, the tone in which she speaks, what clothes she wears, how she looks... all this expresses the essence - the logic in the skirt.
What can be seen here? "Hmm?"
Curiosity and a neat, geometric clothing design.
Logic - 80% Empathy - 20%. (If there is too little empathy, you get rigidity: such a character doesn't care about others [1])
Now for examples. Rin line:
Possible types: MBTI - ENTJ, Socionics - LIE (ILI)
Lunaria from Gekkou no Carnevale.
Martha from Moe Era.
Nabiki from the anime Ranma.
Tina's line:
Possible types: MBTI - INTP, Socionics - ILI
Aiba from AI: Somnium Files.
Arashi from the game SCARLET NEXUS.
Mayuko from the anime Sola.
Erika from the anime Shirobako.
Nao from the anime Charlotte.
Do you know anyone else? I would be very happy for your recommendations and thoughts on this archetype, for I don't fully understand where the original source of this character is... maybe there were some characters that existed long before Rin and Mayuko. Options are welcome. Thanks in advance, friends!