I know that they've been pushing the oversized weapons for intimidation and show factor. That's probably what the swords are, extra large scimitars, and such.
The whip with the poisoned stinger at the end is probably just that. A whip that injects poison when it's done.
The bottom right weapon could be either a throwing knife, or a variant on the kama, that allows for trip attacks more easily.
And the bottom left are claws, obviously. Either taken from an animal and used as weapons by people, or natural weapons. There's also a scorpion obsessed prestige class, which they may be used by.