And Sherdog also used to have Lightweight and Welterweight rankings combined into one; you also can't even access those rankings from the late 90's/early 00's.
Okami was ranked
#13.
Belfort was removed from the rankings due to inactivity (he hadn't fought in 18 months).
Leites was
#14, Brunson was
#12, and Belfort had been removed from the rankings due to inactivity (he hadn't fought at Middleweight in two years).
Bisping was
#11, Misaki was
#28, and his first win against Bustamante was at Light Heavyweight.
Kennedy was
#12.