INFPs are unique individuals. They possess a rare set of abilities that allow them to masterfully understand emotion and the human experience. INFP (Fi-Ne-Si-Te) is is a personality type within the Jungian From what I've seen INFPs are waaaaayy too concerned with being ' rare '. Type, Frequency in Population. ISFJ, %. ESFJ, %. ISTJ, %. ISFP, %. ESTJ, %. ESFP, %. ENFP, %. ISTP, %. INFP, %. ESTP, %. Every statistic of INFP frequency I find is different from the one before it. Some say % while others claim %. Personally, it's very hard to Most common and most rare enneatype?. Type, Frequency in Population. ISFJ, %. ESFJ, %. ISTJ, %. ISFP, %. ESTJ, %. ESFP, %. ENFP, %. ISTP, %. INFP, %. ESTP, %. I have read that INFPs are rather rare, in only about 4% of the population. However, out of the five people in my family, three tested as INFP Why are INFJ males so rare vs females? Especially.