I wish I had better pictures of my own, but I’m instead posting a screenshot of Jessica Farmer’s Facebook guide to Guinea fowl colors. You can see the broad central stripe of fully pearled or dotted birds, like Pearl gray, versus the wavy lines of the semipearled keets, like royal purple. If pied or semipearled, then the sides of the head and wings will be white rather than the lines continuing. I’m attaching a pic of one of my hatches where there are three pied Pearl gray in a column on the left side, then a royal purple to the lower right, and a Pearl gray on the upper right.For the ones you said are pied Pearl gray or royal purple, the parents are my lavender x violet pair