A Psychiatrist will weigh in heavily for medications, so if that is your intention, then go that route. A psychologist or therapist or MFT or Psycho-therapist will be more inclined to be more involved in "talk" therapy. A trans-personal therapist will lean towards a more spiritual and holistic approach. I have had so much therapy (22 years, YIKES!) of all different kinds, it really makes the most sense to determine what exactly you are looking for so you can narrow the search. Perhaps rather then looking for the 'best' or 'top rated' you might look for someone who can give you exactly what it is you want. What works for another,may not work for you, it's a very personal relationship............I have always found wonderful therapists, with great empathy and compassion, humor, warmth and skill............I wanted those qualities because that's what matters to me..............what qualities are important to you? Go after that.
If you are trying to find someone to be supportive of you and give you tools to help you to cope with and accept your daughter's choices, I would start with NAMI, National Alliance on Mental Illness, get in touch with a chapter in your area and ask them for recommendations of therapists who specifically deal with parents of adult children with mental illness. I would be very specific in my search. I would get very clear on what my intention for therapy is, what my goals are, what I hope to get out of it and then, when I determine the answers to those questions, I would go the NAMI route, or go online and find a list of therapist who are well versed in exactly what I am looking for. As in everything, there are good and bad therapists and therapist who excel in certain areas and not others. Getting recommendations from friends will help too.
Do some research, ask friends, if you are involved in a church, or Buddhist or spiritual groups, ask for recommendations within those groups because they will match your values and beliefs as well. Here in Northern Ca. there are so many choices in the area of therapy, it's remarkable. One of the best therapists I had when I lived in Connecticut was a Pastor/therapist and he was extremely helpful because he brought a very interesting point of view to the table. Now I am seeing a woman who runs a HUGE Substance abuse program which has a Co-dependency leg of it which has worked out really, really well for me and I just kind of fell into it........it was more helpful I think at this point with my daughter then' regular' therapy could have been because it concentrated on my enabling and how to detach from that and accept what I cannot change. That emphasis on that particular part of my own 'stuff' was significant at this time in my life with the issues I was facing with my daughter. The present therapist is well trained in all of the tools I needed to have and the various ways enabling really harms people. It isn't something all therapisst agree upon, so I feel fortunate in having found a program that worked so well with exactly what I needed.
I think the bottom line of therapy is to find someone you feel deeply seen and heard with, someone who can BE in the presence of your pain and sorrow and all your deep feelings and whom you trust enough to be vulnerable with. It boils down to being able to tell the truth about your own self to someone who is very present. Interview them, if you don't like them, get out of it. It's a relationship you form with the intention of healing and growing and integrating all the divergent parts of ourselves, so it's necessary to find a good fit.
I believe, if you are clear about what it is you want, what you want the outcome to be and you are essentially willing to do whatever it takes to get the most out of it, you will be guided by your own intentions to the appropriate person.............follow your intuitive hits...........
I hope that helps...............good hunting!