The MBTI (Myers-Briggs Type Indicator) type that is more likely to change their personality depending on who they're with is the "P" (Perceiving) type, particularly the ENFP (Extraverted, Intuitive, Feeling, Perceiving) and the INFP (Introverted, Intuitive, Feeling, Perceiving).
ENFPs and INFPs are known for their adaptability and flexibility. They have a deep understanding of emotions and tend to be empathetic and attuned to the feelings of others. This makes them more likely to adjust their behavior and personality to accommodate the people they are interacting with or to maintain harmony in social situations.
ENFPs, as extraverts, are often skilled at reading social cues and adapting their approach to different individuals or groups. They enjoy connecting with others and can easily switch between various social roles or situations to fit in and make others feel comfortable.
INFPs, as introverts, may initially appear more reserved, but they also have a strong desire for positive social interactions. They might adapt their behavior to create a comfortable and supportive atmosphere for the people they are with.
Both ENFPs and INFPs value harmony in relationships and may avoid conflict or confrontation, which can lead them to adjust their personalities to avoid upsetting others or to maintain a positive atmosphere.
It's important to note that personality flexibility is not limited to specific MBTI types, and individual variations exist within each type. People of all types can adapt their behavior to some extent depending on the situation, social context, or the people they are interacting with. Additionally, personality development and behavior are influenced not only by MBTI types but also by life experiences, cultural backgrounds, and personal growth.