There should be some datapack-able config to change where sort buttons are shown for specific menu types.

e.g.

{
  "id": "mymod:menu_type",
  "sort_buttons": [
    {
      "x": 100,
      "y": 100,
      // ... there has to be some information here about what slots this button should sort
    }
  ]
}

Datapack priority can be used to override previous entries (e.g. setting the array to empty to disable for a specific screen)