“prohibited weapons” require specific approval and include most weapons such as swords, crossbows, martial arts weapons, daggers, flick knives, non-metal knives (excl. cutlery), and presumably, as of 2025, it also includes machetes or knives with blades longer than 20cm (unless it is a kitchen knife)
“controlled weapons” may only be possessed or carried with a lawful excuse (self-defence is not a lawful excuse, and you generally can't carry these in public places) - this includes all knives that are not in the prohibited category
“dangerous articles” must not be possessed or carried in a public place without lawful excuse, this includes baseball bats if you are not going to play baseball
in general, you can carry a utility knife in public spaces with blade no longer than 10cm such as a Swiss Army knife