Well, it's hard for me to differentiate introversion from sensing! We all have our own biases because of the direction we orient the functions in ourselves.
Also, Socionics is a weird world where the notation is geometric figures and intuition relates to a triangular face. It's really a separate theory. You are free to pursue it, but bear in mind that this forum in general is not very well versed in it and so people might not give you the answers you are looking for.