I believe that the statement: "bitcoin is new kind of money" passes the
duck test.
Bitcoins function as money (they're a unit of account, a medium of exchange, and a store of value), and if PayPal started allowing Bitcoin transactions tomorrow I'm certain they'd treat them as Just Another Currency.
If you like, call it a commodity, but I think all you'll accomplish is confusing potential users who might think they'll end up getting pork-bellies delivered to their porch if they don't get rid of their bitcoins.
Just as how you said it, bitcoin is a new kind of monet. Bitcoin is also considered resources that has it's value. This is well used by people who knows bitcoin around the world. It has lots of potential to be trade off, invest and save for future use. Same as the fiat money, this has a value that this digital world considers. Digital currency should we say, bitcoin has it's unique function and use.