Copy part of the menu

Good afternoon!
I understand that my question doesn’t concern GD, but if you don’t find it difficult to answer it, I’d appreciate it. Maybe this will be useful for other users as well.

I have created a menu to go to the search pages for the cities I need for one type of listing. This group of items consists of more than 90 items. It took many hours of manual work. Now I want to create the same group of menu items, but for another type of listing. I would like to shorten the development time and copy part of the menu and paste it to another location on the same menu. And after that, I will edit the links in it.

Can you tell me the plugin for this work, or should I do it in another way? Maybe by editing the base?