I, and tens of millions of other people, use Grok as the AI chatbot. Why is it not included among the AI available?

I have found that Grok is more likely to provide a balanced answer than chatGPT, which usually swings to the left, and has a tendency to just make stuff up. I haven't really tried the rest on your list, I haven't even heard of some of them, for that matter. I don't understand why you couldn't include it, when you included all the rest. While I'm at it, why did you remove the upvote/down-vote in the new tab suggested sites? I was down-voting all of the far-left progressive garbage, out of tens of thousands of pages you never showed a single right-wing suggestion from sites like Fox, New York Post, etc., or even the center, like The Hill, but once I got rid all of the garbage from Huffington, Salon, Vox, Guardian, CNN, there were some good articles by sites like AP, Smithsonian, Scientific American, etc. that showed up and were center or center-left news, not propaganda. I'm giving up on the tab suggestions for now, I'll check it again sometime to see if you are still ignoring the 32% of the population who are right-wing Republican, and the about 38% of the population who are independent/center, to continue to concentrate on the 30% who are left-wing Democrats, and more particularly the tiny percentage who are Progressives among the Democrats. Instead of increasingly becoming the browser of choice for just one part of the population, it might be a good idea to think about representing the other 70% of the population as well.