If you want a specific speed of delivery from your protein source, here's a list to help.
Slow Protein
Pure NZ Micellar
Pure NZ Casein
Intermediate Protein
Pure Rice Protein
Pure European Pea Protein Isolate
Fast Protein
Pure NZ Whey
Pure NZ Primal Whey
Defining Whey Premium
Fastest Protein
Pure NZ Primal Isolate
Pure NZ Isolate
Pure NZ Pro Iso XF