Authors - Who's cultish, who is not?

I have a bunch of books I've already donated a while ago--books by Marianne Williamson, Bryon Katie, etc. with thanks to this forum.

However, I can't seem to let go of others. I feel like I'm going to be back to where I started when I first got into spiritual type stuff.

I'm going to donate the following books by the authors:
Eckhart Tolle
Wayne Dyer
Oprah
Mark Nepo
Deepak Chopra
Louise Hay

Are any of the following authors normal/not cultish:
Brene Brown
Thich Nhat Hanh
Don Miguel Ruiz
The Dalai Lama
Michael Singer
Melodie Beattie

How do you all know which authors are not cultish, and which are? Or should I just get rid of them all?