The Tree of Life in the New Testament

Bible is jewish meditation. One of the hall marks of jewish meditation literature is that biblical authors will riff off of symbols, types and images. By repeating them and building on them in new ways, they're actually communicating important ideas. So trees, people a meeting god at tree s and either succeeding or failing at test majorsa major theme throughout the whole of the bible. There is no better candidate for a biblical theme than the tree of life. However, it wasn't on your original list.