So, the original question - is there anyone I don't want on my channel? I have actually thought about this before. I am really a beginner with motovlogging and I have not had any other youtube channels before. So I came to a conclusion, that my main fear would be people, I interact with on daily\weekly\monthly basis, judging me. So I don't push my channel through them. Several of my relatives and colleagues know, that I have a youtube channel and I have shown some of them bits of what I have uploaded. But because I do it in English, not in my native language, they do not seem to be very interested.
So I could say, there are no people I would not want on my channel, but I decided, at least for now, not to invite anyone to my channel, but rather have people discover me, and see if I can keep them interested.