I use Huel as a meal replacement at work. Similar vibe to Soylent as it's a powder you mix in a shaker bottle.
Huel uses oats and pea protein as it's main carb/protein source vs soy in Soylent. Based on consuming 2k calories a day of it you would meet all your RDAs with pretty good macros.
It's vanilla flavored but I don't really notice the vanilla much, kinda tastes and mouth feels like liquefied oatmeal. I generally mix in cinnamon, though they just released flavor shots you can order if you don't want to both experimenting on your own.
Works well as a snack if you don't want to eat a full meal or if you don't have time to make something before running out of the house.