I wrote this question on web applications and it was closed because it has been considered a duplicate. Actually my question is not about sorting playlists, but sorting videos inside a playlist. Could a moderator reopen it please?
The current close reason is:
I disagree with the close reason. The question is crystal-clear to me. The question does not need additional details or clarity. The question should be reopen. Unfortunately, I can't vote to reopen because the question is locked.
To address the comment that moderator Rubén left:
It'd be great if the mod could add why they returned the question to Super User. I don't understand why the question was returned to Super User: the question is on-topic on WebApps and off-topic on Super User, so the migration rejection makes no sense to me.
The close reason on your question is currently for details and clarity so my answer is based on that.
I didn't close your question but I'm happy to suggest some details you could add to improve your question.
I'm wondering if it's possible to sort the videos in a youtube's playlist by name; so far I found only solutions to sort playlists alphabetically.
You could clarify what you already know about the basics of YouTube playlists, what you've have tried, and why it didn't solve your problem.
You could describe the problem space, for example how many videos, how frequently does the playlist change. Is it enough to sort it once, or once in a while?
Do you have a no idea how to sort playlist content or are you aware of the available options?
Do you already know that you can manually create any sort order you want for a playlist you own, be it alphabetical, by size, by second word?
Is the answer you are looking for a "How To" on sorting YouTube playlist content?
Are you looking beyond the included options for a solution using a script or extension that leverages Youtube's API?
Obviously I can only guess at the details of your specific situation but hope that gives you some ideas.