I've noticed that it could be said that some types all people, almost all, relate to even if its not part of their tritype
I'd say that are 4 and 6.
Especially Fs relate to them
4 - feeling defective, like esential part of u is missing = well that can all be caused based on not so happy past that individual had. Especially sensitive people are likely to grow up and feel defective and other 4's characteristics
6 - anxiety, fears - what else to say? Its one of the basic human feelings