There may be formidable fighters among the Jews, but they do not fit the stereotype, just as teetolating and pacifist Irish do not fit the stereotype.
Team mascots are in essence fierce stererotypes.
The team called the Arabs, because they farm dates, do not fit the stereotype of fierceness. People who pluck dates from palms are not stereotypically fierce.
I don't think there are too many teams named for timid animals like The Rabbits, the Hares, the Bunnies, the Fraidy Cats, the Lemmings, the Voles, the Fieldmice, the Chickens, the Chickens, the Scurrying Cockroaches are not common mascot names.