Freud developed the instinct drive theory out of his extensive research and knowledge of anthropology, neurology, zoology, philosophy, and most importantly, self-analysis, as well as extensive patient casework.
Jung developed analytical psychology out of his early training in psychoanalysis and vast knowledge in working with diverse patient cases. His break with Freud led to its further development. Jungian is the most distinct and varied application out of the analytical models.
Object relations/relational theory
You could say that Melanie Klein was potentially more Freudian than even Anna Freud, Sigmund Freud's daughter, who made extensive contributions to the work of child analysis. Klein's theories are based on early relational object identifications.
I am a psychoanalytic therapist, including a hypnotherapist, and family systems researcher/PhD student - a student of philosophy. I am happy to answer any questions you have.
My research includes the links between psychoanalysis and family systems specifically models starting with object relations and the family systems pioneers of the 1950's-1980's. Most family systems pioneers were psychoanalysts, even including, the cognitive behavioral models which spanned around the same time.
I talk about psychoanalytic application in lieu of contemporary doctrine.