There was a rule mentioned in one topic about MBTI/socionics correlations in regards to INTxs
Socionics INTj (logical subtype) -> MBTI INTJ
Socionics INTp (logical subtype) -> MBTI INTJ
Socionics INTj (intuitive subtype) -> MBTI INTP
Socionics INTp (intuitive subtype) -> MBTI INTP
I don't know how accurate this is.