What kind of protein powders are most durable?

Hello,<br><br>I recently started doing mealprep and after some time I found it kind of tedious to buy all the ingredients and cook every time, so I started searching for alternatives and I found protein powders. Some of them are very filling and can be used in most dishes and can last for a very long time, such as whey, rice, pea, hemp etc.., but for some time I was kind of skeptical if the protein powder would spoil in a short amount of time or if it would have a bad taste after a long time of being stored, but now I figured it out after some research that most of them can last months in a fully closed bag in the fridge, some of them can even last longer.<br><br>So now my question is what kind of protein powder is the most durable? And is there any kind that can last years in a closed bag in the fridge or outside the fridge?