Slimfast and Complan off the top of my head. And those two have been around for decades. MyProtein sell simular stuff that is more balanced than whey protein + whole milk for a meal replacement. Also, whey + whole milk + instant oats lets you control the macros fairly well, assuming your getting all your micro-nutrients from real food elsewhere. And this is without looking on google. Id bet there are many many more. All the own-brand versions of slimfast for example.