So you used your sociotype to choose an MBTI type/temperament. That is what most on this forum do.
These systems correlate more or less. True correspondence is impossible, even if Keirsey and Socionics adopt MBTI four letter codes.
My Keirsey and MBTI are based on Sociotype. MBTI becomes Exxx if I go by test. Keirsey becomes generic Operator (xSTP). Big 5 is low-mid openness, mid conscientiousness, mid-high extraversion, low agreeableness, high emotional stability.
How did your results "align?"