Are there any inside linebackers that wear/wore numbers in the 90s?

Title. Before the current numbering rules (and even the Bosworth rule of 2015) the rules stated that linebackers could wear 50-59 and 90-99. However, there isn't a distinction between the different types of linebackers. Obviously, you have 3-4 OLBs who wear numbers in the 90s because they're basically just edge rushers, but what about the inside guys? Is there a written rule against a middle linebacker wearing a number in the 90s? Or is it just an unwritten rule?