Most whey protein powders are very easy to digest, especially powders made with "whey isolate" or "whey hydrolysate".
Yes, whey hydrolysate is not only easy to digest, but has been pre-digested with enzymes during manufacture which makes amino acid absorption rapid.
If you are not lactose intolerant then you should not have trouble digesting whey concentrate.
While plant-based protein powder is a little slower to digest than whey, it is easier to digest as it presents less digestive problems.
Hemp protein powder is one of the easiest to digest plant proteins and has a biological value of 87 which makes it very similar to egg protein powder at 88.
Beef protein powder is as easy to digest as a steak and takes around 2 to 3 hours.
Plant proteins unlike whey, are naturally lactose free and often more easily digested for over 60% of the population that can suffer from lactose intolerance.
Egg protein powder is easily digested and has one of the highest bioavailability scores of 88.
Rice protein powder is the easiest plant-based protein to digest and is a great alternative to whey, which many find hard to digest due to its lactose content.
Pea protein powder is digested at a rate of about 3.4 grams per hour in tests. This would allow around 10.2 grams of protein to digest over a 3 hour period.