Some of those are just weird iterations of existing foods. A rainbow bagel tastes the same as a regular bagel, so it is weird for the sake of being weird.
Poke, on the other hand, is extremely healthy and delicious. If it werent expensive I’d eat it for every meal.
Açaí bowls fall into this category as well. They are nutritious and delicious, plus I lived in Brazil for six years and they are cheap there.