Splitting long menu list

So for some menu items I have long sub menu lists, Now they can’t really be categorised into columns so instead of a long list I want to split the list it into columns, Like the attached screenshot but without the column headings.

Any way to achieve this easily without the need of HTML blocks or a way to hide the column headings?

I tried adding a custom CSS class to the column headings in the menu builder and hiding them but it hid the entire columns.