Hello.
I am a registered psychotherapist (qualifying). Psychotherapists basically provide therapy. However, we are not qualified to provide diagnoses. And if we do assessments/diagnostic interviews we have to be supervised by a psychologist. Also most psychotherapists have a master's degree.
OISE has a Master of Education in Counselling Psychology and Psychotherapy that provide its graduates with the minimum requirements to register with CRPO (College of Registered Psychotherapists). I wasn't aware McMaster's had a new program and that's super cool! I think Guelph also has a Family/Marriage Counselling Master's degree as well.