Thanks for this, and it just shows that,
1. AI is not really that complete as this stage
2. Still based on us, on how we are going to enrich that AI
So it's good to test it, but don't expect something complete. I know few of the sites that mention there, but there could be more missing in the list, obviously.
There can be two reasons why the list is not complete.
1. ChatGPT's information is only limited until 2021, and it has no knowledge of anything that has happened after that.
2. You will need to specifically mention in your prompt that you need all the available items to be on the list, otherwise, it will just generally pick some of the from the data it has and present them to you.
Overall, you are right that AI is still not as complete as people think it is, and even the information it provides can sometimes be wrong, though presented very rightly. So, it is always better to check the generated information before using them just to avoid problems.