They stopped doing that when they started the new style jlpt in 2011 or so, I think? I think it makes sense from a testing perspective. If you want to be able to give an accurate overview of someone’s (passive) abilities in the language. If you do haveva list then on the one hand people can study specifically for the test, thus narrowing their knowledge in a way that will not be reflected correctly in the test. On the other hand, you are restricting yourself as to what all you can ask on the test. So it’s a two edged sword.
I think for N1 you can reasonably expect to at be confronted with any jouyou kanji, on any part of the test. But that’s just my opinion. So maybe put in all jouyou kanji that aren’t N2 and below yet?