They don't really have one. If you go to https://www.completefoods.co/ , you can find a bunch of meal replacement recipes many of which are soylent inspired because they couldn't get soylent shipped to them. Some people also ship their custom blends.

/r/soylent is a popular place where people talk about meal replacements.

I think they are kind of like Kleenex, they will become the common name for the genre.

As for taste, I tried Soylent and it tasted like wet cardboard to me. I ended up switching to Schmilk (you mix the powder with milk) and the now discontinued 100% Food.