The NY Jets started as the Titans (get it, Giants, Titans) then changed to Jets to rhyme with Nets and Mets. For a few years people called all three teams the "Ets."
My favorite goofy sports name was when the New Orleans Jazz moved to Utah and kept their team name. There's nothing that reflects the culture of Utah like Jazz music.
Don’t get me started on “Colts”. That refers to our long “cradle of racing” Thoroughbred history (chosen by fan vote). Indiana is not famous for any horses.