I knew that Saskatchewan are the rough riders but I didn't know there was another one. That's pretty silly in such a small professional league. There are a number of college sports teams that play revenue sports at the D-1 level and have the same names, including Eagles, Tigers, Aggies, and Owls.
I think it's dumb that Pittsburgh are The Panthers and Penn State are the Nittany Lions. They're in-state rivals and while the names are different it's the same animal.
Let's not forget the original XFL teams. I'll bold the ones I consider standouts.
New York/New Jersey Hitmen
Las Vegas Outlaws
Los Angeles Xtreme
San Francisco Demons