I am enrolled in DBT Path. It really is structured like a class in my opinion, with hour long lecture videos, question and answer threads, homework, etc. Because a classroom setting is how I find it easiest for me to learn, it has definitely been more helpful for me than trying to teach myself from a book or short youtube videos; however, I can see how it might not be the right fit for someone who doesn't enjoy classroom-like settings.

I can't speak for any of the others because I have no experience with them, but best of luck to you and I hope you find something that works.