This is a good question if you are going to create a YouTube channel that will be serving an intended audience which could use your knowledge in a subject matter for citation.
Therefore, if your intended audience is academia, or people who will refer to your channel for professional development, you may want to go straight to the area of expertise that you will be presenting and use THAT as the name, followed by the word "channel".
For example, you can use "The Linguist Channel" or "The Teacher Channel" or "The JazzMusician Channel" and it will add up loads of more credibility than going with a nickname alone.
This is because people tend to go for professional names rather than nicknames when it comes to preferences. They want to ensure that you are "the real deal". Hence, having the word "THE" and the middle is your topic followed by the word "channel" will give your intended public that level of trust that you want to keep them coming back!
In the end, this will be a decision of personal choice. I think that you might want to take into account a couple of things. The first would be what type of videos are going to be featured on the channel. Perhaps, you would want a channel name to reflect this. For example, President Obama's channel is entitled, "BarackObamadotcom's channel," because much of what is featured there relates to President Obama's website that details what he does. The YouTube Channel takes the same name because it operates in the same way on YouTube. Another approach might be to make the channel name reflect you, the user and designer. This could be another approach. If you wanted to dedicate it to someone, you could name the channel for this, as well. Engaging in some reflection about what you want to show and what you want the channel to be about might be the best guide here in determining a name.