The new JLPT tests do not have such a thing as a test specification. There is no word list. There is no kanji list. There is no grammar list.
What most sites do have copied old lists for 1-4kyuu (N1, N2, N4 and N5) and since there isn't an old level corresponding to N3, they try to figure out what goes in there from a mix of past tests and interpolating in from either side.
Also, I would expect a lot of these websites to just copy off one another, so various online sources agreeing doesn't necessarily mean anything.
Basically, don't take any book/list as a complete guide to what's going to be on the test. And you shouldn't only be studying from JLPT test materials. Try to find things you can read (NHK Easy? other basic non-fiction?) , and pick up vocabulary more organically.