The brain types website and books also explain how it differs from the Myers-Briggs Type Indicator in that it believes the ENTP/FCIR type is by far the most common of the sixteen types, whereas some other types presumed as common in the Myers-Briggs Type Indicator, such as the ISTJ/BEIL, are actually only about 3% of the populace according to their estimates.
The Brain Types website and books highlight that ENTP/FCIR type is considered the most common among the sixteen types, whereas other types thought prevalent in the Myers-Briggs Type Indicator, such as ISTJ/BEIL, are estimated to be only about 3% of the population.