What's the best name for the cuisine that includes: avocado toast, salads, smoothies, acai bowls, X but with brown rice, X but made vegan... ?

I've been calling it "hipster food" but I wonder if there's a more widespread standard term for it.

You are almost describing Rio de Janeiro's juice bar's.
One of my favourite places to eat.
A few good ones:
https://www.tripadvisor.com/Restaurants-g303506-zfd9911-Rio_de_Janeiro_State_of_Rio_de_Janeiro-Juice_and_Smoothies.html

So, maybe "Carioca diet" 🫡