I also call this an add list with optional ability to reorder. It's essentially a list with multiple columns that may contain form fields. It may be a fixed list or have the ability to add new rows/items to the list. Here's some documentation for the pattern.
Notes
many of these will be configurable (on/off)
  • reordering
  • add new row
  • may have multiple columns
  • column headers for the list
  • can be able to remove rows
  • cells may contain input fields