The variant knot names are included in the list with redirecting links to the most formal name. (approximately 300 knots are listed at this time)
... I 10 J 11 L 12 M 13 N 14 O 15 P 16 R 17 S 18 T 19 V 20 W 21 Y 22 Z A Roald Amundsen, (1872-1928), Norwegian, first at the South Pole, first to ...