What a great idea. So, to be clear, you want a new column header for "USER" instead of just being able to toggle between the two options - is that right?

Yes, exactly.
Also, it would be very helpful to have a sidebar filter to see which orders are assigned to specific user.

Would love to be able to quickly identify which user on our account created particular shipping labels.

Would be awesome if there was the option to add a column within Shipment History that maybe just added the initials of the person who created the label. Would help me quickly eliminate the he-said she-said finger pointing that happens from time to time, at least in our operation. Thank you

Personally, would prefer it functions this way rather than having to filter through the results first before searching within that filter category to see who shipped the order in question

Thanks for the clarification on what you are requesting Vladislav and Khody. I have forwarded your request.