Yes, an INFJ (Introverted, Intuitive, Feeling, Judging) personality type can certainly be strongly typed and introverted or shy. In fact, being introverted is one of the defining characteristics of an INFJ. They tend to be more reserved, preferring introspection and deeper connections with a select group of close friends rather than seeking attention from large social gatherings.
Shyness is a trait related to social behavior and discomfort in social situations, which can be present in any personality type, including INFJs. Shyness may be a temporary or situational aspect of an individual's personality, and it does not negate their underlying INFJ type.
Being "strongly typed" refers to how well an individual's personality traits align with a specific personality type, such as INFJ. Some people may strongly exhibit the traits associated with their type, while others may show more variation within the type.
It's important to remember that personality types are not strict boxes but rather a framework to help understand general patterns in behavior, preferences, and thought processes. People are complex and unique, and there can be variations even within the same personality type.
If you identify as an INFJ and also feel introverted or shy, that combination is entirely valid and understandable. Embrace your unique traits, and remember that being introverted and/or shy can have its strengths and advantages in various situations. It's essential to focus on personal growth and self-awareness while also recognizing and appreciating the diversity of personalities in the world.