Ha ha, typical Type 5 reaction
Seriously, generalized "tests" or "analyses" like this, whether they're ostensibly "scientific" or veer off into realms of mumbo-jumbo, like palm reading and astrology, usually have one thing in common: the results are sufficiently broad that it's easy to see at least something of ourselves no matter what they come up with.
Still, I think the 4w5 I got was pretty accurate once I read and compared it to the other 8 types. But then, I think I'd probably have come up with that just from the descriptions, without taking the test itself. Maybe the greatest value of the test comes just from confronting the questions and forcing yourself to look at yourself as honestly as possible.
I don't think we should try to force ourselves into fitting into any of these 9 (or any other) categories, or to allow them force us to fit into them.