I also tried Remicade, Humira and Entyvio for chronic pouchitis. And Aza, Stelara, Xeljanz. None of them helped me. Now I'm on chronic antibiotics, after two years of trying to take them only for short periods. My pouchitis symptoms are gone and I have a normal digestion for someone with a pouch.
Have you tried antibiotics? You never mentioned them in your recent posts.