This is a different page than the one that appears under Psychotherapy, which is also useful. This is a Wikipedia “Category” and it shows well how Psychotherapy is just that. Psychotherapy is a category like “tree” then there are many species some very different from others. In New Zealand we have one organization that covers all the various modalities, this is rather unusual in the world, even though there is also a World Council for Psychotherapy WCP (A trip to Beijing in 2008 could be a good thing to do!).
While there are irreconcilable world views behind some of the modalities, they reflect the complexity of the mind & soul. No one modality can really capture it all. My own training was in Psychodrama – which has its strengths but is essentially a group method. My one-to-one work is informed also by my training as a Social Worker and through my experience of personal Jungian Analysis.