In recent times more systematic hill lists have been produced based upon topographical prominence and height, rather than mere visual appeal. Most relevant to Crinkle Crags are the lists of Hewitts and Nuttalls. These variously list the summit, the first Crinkle (Crinkle Crags South Top), and two tops on Shelter Crags (Shelter Crags and Shelter Crags North Top), but exclude the other three Crinkles, although the third (sometimes named Gunson Knott), fourth and fifth (also sometimes named Gunson Knott) are all Birketts.