I don’t think there is. I do think that it is sorted based on when it was created (I.e. oldest to newest).
For example, I created “MSFS Discussion” then “HFS” then “Admin team” and it is in the order that I made them in.
(“General” and “Staff” are defaults)
I can recommend you create the new channels
starting with the first channel in the alphabet (that is, if you needed to make channels “cookie” “apple” and “banana”, create “apple” first then “banana” and so on.)
Hope this helps 