I just tested the links and they worked for me. These are plain text lists.
It's a huge list of tested items. When I published our findings, we had tested ~700 items that were implemented till update 8.4 - this is when Yalahar was implemented - and ~100 more items that were implemented between 8.4 and 8.54. After the spoiler publication, a couple hundred more items were tested and we now passed the mark of 1000 tested items that does not work at the transmutator machine. Given the list size, it would be too time consuming to take screenshots of all these tested items. Even recording a video of our full list - with both tested and untested items - which contains item sprites would take some time and wouldn't be easy for you to check what has been tested and what hasn't.
Anyway, since this is a personal research made by a few players, I am not sure if making a question about it would really fit to TibiaQA's policy.