wp_list_categories walker without links on categories that have subcategories (to make a nested dropdown menu)

I’d like to make a custom walker that works with wp_list_categories to generate a menu of nested uls using my category, sub-category, and sub-sub-category(?) structure. Any category that has sub-categories can’t be a link so it can be clicked in order to reveal the sub-categories (or sub-sub-categories).

Saving multiple fields (dropdown and text) in custom metabox

I have seen this question asked a bunch but nothing seems to work. I have a simple metabox within a CPT that needs to save two values. It needs to save a dropdown of pages and a url text field. I can get the text field to save and display but not the drop down. My class is being called on initialization. I think it has something to do with the $dropdown_args variable but I’m not too sure. I can see it saving in my database but it just doesn’t display the selection after saving. The description metabox saves and displays fine, it’s the landing page one that needs help. I have posted all my code and any help will be greatly appreciated.