H.L. Mencken advised us: “For every complex problem, there is a solution that is simple, neat and wrong.”
This trust stuff is complex, a fact not reflected in most of the posts here. For example, a TOD to a minor, a special needs person, or someone who is deceased can open a huge can of worms. A "complicated beneficiary tree" could probably be handled by a carefully written will. And, of course, a trust is only as good as the trustee. Which is a good reason to use a professional and, where possible, a trust protector.
With respect to all the enthusiastic DIY-ers here, this is not an area where SGOTI plus internet folklore is a good planning strategy. DW spent a large part of her career in a megabank trust department and has horror stories about badly drafted documents both from incompetent attorneys and from DIY estate planners. It was not uncommon for her or one of her troops to end up going to court to have problems rectified. The cost of that, of course, is borne by the trust, the estate, or both.